(1R,3S)-3-Hydroxy­meth­yl-N-isopropyl-2,2-dimethyl­cyclo­propane­carboxamide

Zhong, J.; Zheng, B.; Hou, S.

doi:10.1107/S1600536809051538

organic compounds

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 66| Part 1| January 2010| Page o118

doi:10.1107/S1600536809051538

Open

access

(1R,3S)-3-Hydroxymethyl-N-isopropyl-2,2-dimethylcyclopropanecarboxamide

Jiangchun Zhong,^a Bing Zheng ^a and Shicong Hou ^a ^*

^aDepartment of Applied Chemistry, China Agriculture University, 100193, Beijing, People's Republic of China
^*Correspondence e-mail: Houshc@cau.edu.cn, Wangmincau@yahoo.com.cn

(Received 4 October 2009; accepted 30 November 2009; online 12 December 2009)

The asymmetric unit of the title compound, C₁₀H₁₉NO₂, prepared from (−)-1R-cis-caronaldehyde, contains two independent molecules. In the crystal structure, intermolecular O—H⋯O and O—H⋯N hydrogen bonds form an extensive three-dimensional hydrogen-bonding network.

Related literature

For details of the synthesis, see Huang et al. (2001 ). For the crystal structures of related derivatives of (−)-1R-cis-caronaldehyde, see: Na & Wang (2009 ); Wang et al. (2009 ).

Experimental

Crystal data

C₁₀H₁₉NO₂
M_r = 185.26
Orthorhombic, P 2₁ 2₁ 2₁
a = 9.4628 (19) Å
b = 12.298 (3) Å
c = 18.710 (4) Å
V = 2177.4 (8) Å³
Z = 8
Cu Kα radiation
μ = 0.62 mm⁻¹
T = 173 K
0.53 × 0.43 × 0.39 mm

Data collection

Rigaku R-AXIS Rapid IP area-detector diffractometer
Absorption correction: multi-scan (ABSCOR; Higashi, 1995 ) T_min = 0.734, T_max = 0.794
15043 measured reflections
2271 independent reflections
2129 reflections with I > 2σ(I)
R_int = 0.046

Refinement

R[F² > 2σ(F²)] = 0.042
wR(F²) = 0.110
S = 1.06
2271 reflections
240 parameters
H-atom parameters constrained
Δρ_max = 0.26 e Å⁻³
Δρ_min = −0.19 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1A⋯O3ⁱ	0.84	1.96	2.796 (3)	174
O3—H3⋯O1ⁱⁱ	0.84	1.98	2.782 (3)	160
N1—H1⋯O4	0.88	2.03	2.906 (3)	176
N2—H2⋯O2ⁱⁱⁱ	0.88	2.09	2.964 (3)	171
Symmetry codes: (i) $[-x+2, y+{\script{1\over 2}}, -z+{\script{1\over 2}}]$ ; (ii) $[-x+{\script{3\over 2}}, -y+2, z+{\script{1\over 2}}]$ ; (iii) x+1, y, z.

Data collection: RAPID-AUTO (Rigaku, 2001 ); cell refinement: RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.

Supporting information

Crystal structure: contains datablocks I, New_Global_Publ_Block. DOI: 10.1107/S1600536809051538/cv2626sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536809051538/cv2626Isup2.hkl

checkCIF report

Comment top

In continuation of our study of new (-)-1R-cis-caronaldehyde derivatives (Na & Wang, 2009; Wang et al., 2009), we present here the crystal structure of the title compound (I).

The asymmetric unit of (I) contains two independent molecules (Fig. 1). The crystal structure is stabilized by intermolecular O—H···O and O—H···N hydrogen bonds (Table 1).

Related literature top

For details of the synthesis, see Huang et al. (2001). For the crystal structures of related derivatives of (-)-1R-cis-caronaldehyde, see: Na & Wang (2009); Wang et al. (2009).

Experimental top

We have synthesized the title compound following the known procedure (Huang et al., 2001).

(1R,5S)-4-hydroxy-6,6-dimethyl-3-oxa-bicyclo[3.1.0]-hex-an-2-one (2.84 g, 20 mmol) was dissolved in the mixture of 30 ml of Et₂O and 5 ml of MeOH. This solution was cooled to 0°C and a solution of diazomethane in ether was added. The solution was slowly allowed to warm to room temperature without additional heating. The reaction mixture was concentrated under reduced pressure. The crude product was passed through a silica gel column (hexane/ethyl acetate = 6:1) to afford (1R,3S)-Methyl-3-formyl-2,2-dimethylcyclopropane-carboxylate as a colorless oil (2.9 g, 93% yield). [α]^D₁₈= -73.4(c 0.99, CHCl₃); IR (neat) 2957, 1731, 1701, 1439, 1379, 1200, 1137, 1119, 839 cm^-1; ¹H NMR (500 MHz, CDCl₃): δ 1.27 (s,3H), 1.55 (s, 3H), 1.83–1.86 (m, 1H), 2.12 (d, 1H, J = 9.5 Hz), 3.71 (s, 3H),9.75 (d, 1H, J = 9.5 Hz,); ¹³CNMR (125 MHz, CDCl₃): δ 15.5, 28.3, 29.8, 36.1, 40.9, 52.2, 170.4,200.4; HRMS (TOF): m/z calcd for C₈H₁₃NO₃ [M⁺H⁺]: 157.0859, found: 157.0865.

NaBH₄ (3.78 g, 100 mmol) was dissolved in 60 ml of dry MeOH,and a solution of (1R,3S)-Methyl-3-formyl-2,2-dimethylcyclopropane-carboxylate (15.6 g,100 mmol) in MeOH was added slowly into above mixture. After it, the reaction was kept for 30 min. Then, saturated HCl (1 ml) was added to stop the reactionand extracted with ether (40 ml x3). The organic layer was dried over anhydrousNa₂SO₄. Then, concentrated to give alight yellow oil (13.74 g, 87% yield). To a solution of benzene (60 ml) was added the light yellow oil (8 g, 50 mmol), the mixture was refluxed for 2 h. Then, concentrated under reduced pressure (2 m mH g, 56°C) to give (1R,5S)-6,6-Dimethyl-3-oxa-bicyclo[3.1.0]hexan-2-one with 90% yield. ¹HNMR (500 MHz, DMSO): δ 1.176 (3H, s),1.184 (3H, s), 1.943–1.958 (1H,m), 2.034–2.059 (1H, m), 4.14–4.16 (d, 1H, J = 9.5 Hz), 4.350–4.381(1H, m); ¹³C NMR (125 MHz, DMSO): δ 14.37, 22.99, 25.18, 30.01, 30.47, 66.49, 174.92.

The isopropanamine (2.2 ml, 20 mmol) was dissolved in dry THF (10 ml), cooled to -15°C, and, DIBAL-H (13 ml, 20 mmol) was injected. After themixture was sirred for 20 min, the solution was allowed to warm to 30°C and to react for 3 h. Then, it was cooled to -5 °C, and a solution of (1R,5S)-6,6-Dimethyl-3-oxa-bicyclo[3.1.0]hexan-2-one (2.2 ml) in THF (7.5 ml) was added withstirring for 10 min. After 20 h at room temperture, the reaction was quenched with water (10 ml) and 4 N HCl (15 ml) and the mixture was extracted several times with Et₂O. The combined organic phases were washed with 1 N HCl, then, dried over Na₂SO₄ and concentrated under reduced pressure to give the products (1R,3S)-N-isopropyl-3-(hydroxymethyl)-2,2-dimethylcyclopropanecarboxamide (3.48 g, 87% yield). [α]^D₂₀= 41.0 (c 1.14, CHCl₃); IR(KBr): 3272.57, 2960.39, 1654.66, 1630.67, 1547.28, 1450.94, 1240.11, 1198.22,1120.70, 1027.72, 699.99 cm^-1.1H NMR (500 MHz, DMSO): δ 1.144–1.200 (3H, s), 1.372–1.428 (3H, s), 1.657 (2H,m), 3.123–3.150 (1H,m), 3.840–3.883 (1H, m), 3.972–4.028 (1H, m), 4.442–4.458 (2H, m), 6.067 (1H, m), 7.264–7.302 (3H, m), 7.333–7.363 (2H, m). ¹³CNMR (125 MHz, DMSO): δ 15.48,24.15, 28.59, 31.81, 32.59, 43.80, 59.08, 127.56, 127.76, 128.74,138.18, 171.26.

Computing details top

Data collection: RAPID-AUTO (Rigaku, 2001); cell refinement: RAPID-AUTO (Rigaku, 2001); data reduction: RAPID-AUTO (Rigaku, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

Fig. 1. Two independent molecules of (I), with atomic labels and 30% probability displacement ellipsoids. Some of H atoms omitted for clarity.

(1R,3S)-3-Hydroxymethyl-N-isopropyl-2,2- dimethylcyclopropanecarboxamide top

Crystal data top

C₁₀H₁₉NO₂	D_x = 1.130 Mg m⁻³
M_r = 185.26	Cu Kα radiation, λ = 1.54186 Å
Orthorhombic, P2₁2₁2₁	Cell parameters from 426 reflections
a = 9.4628 (19) Å	θ = 2.2–68.3°
b = 12.298 (3) Å	µ = 0.62 mm⁻¹
c = 18.710 (4) Å	T = 173 K
V = 2177.4 (8) Å³	Block, colourless
Z = 8	0.53 × 0.43 × 0.39 mm
F(000) = 816

Data collection top

Rigaku R-AXIS Rapid IP area-detector diffractometer	2271 independent reflections
Radiation source: rotating anode	2129 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.046
ω scans at fixed χ = 45°	θ_max = 68.2°, θ_min = 4.3°
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	h = −11→1
T_min = 0.734, T_max = 0.794	k = −14→14
15043 measured reflections	l = −22→22

Refinement top

Refinement on F²	Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: full	H-atom parameters constrained
R[F² > 2σ(F²)] = 0.042	w = 1/[σ²(F_o²) + (0.0502P)² + 1.0161P] where P = (F_o² + 2F_c²)/3
wR(F²) = 0.110	(Δ/σ)_max < 0.001
S = 1.06	Δρ_max = 0.26 e Å⁻³
2271 reflections	Δρ_min = −0.19 e Å⁻³
240 parameters	Extinction correction: SHELXL, Fc^*=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4
Primary atom site location: structure-invariant direct methods	Extinction coefficient: 0.0058 (5)
Secondary atom site location: difference Fourier map

Crystal data top

C₁₀H₁₉NO₂	V = 2177.4 (8) Å³
M_r = 185.26	Z = 8
Orthorhombic, P2₁2₁2₁	Cu Kα radiation
a = 9.4628 (19) Å	µ = 0.62 mm⁻¹
b = 12.298 (3) Å	T = 173 K
c = 18.710 (4) Å	0.53 × 0.43 × 0.39 mm

Data collection top

Rigaku R-AXIS Rapid IP area-detector diffractometer	2271 independent reflections
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	2129 reflections with I > 2σ(I)
T_min = 0.734, T_max = 0.794	R_int = 0.046
15043 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.042	240 parameters
wR(F²) = 0.110	H-atom parameters constrained
S = 1.06	Δρ_max = 0.26 e Å⁻³
2271 reflections	Δρ_min = −0.19 e Å⁻³

Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
O1	0.6210 (2)	1.20449 (16)	0.05202 (10)	0.0338 (5)
H1A	0.6936	1.2425	0.0454	0.041*
O2	0.5838 (2)	0.94520 (18)	0.20498 (10)	0.0365 (5)
O3	1.1281 (2)	0.81763 (16)	0.47435 (11)	0.0408 (5)
H3	1.0658	0.8016	0.5045	0.049*
O4	1.0762 (2)	0.8858 (2)	0.28306 (11)	0.0440 (6)
N1	0.7727 (2)	0.87180 (18)	0.26112 (11)	0.0273 (5)
H1	0.8639	0.8795	0.2689	0.033*
N2	1.2844 (2)	0.88054 (19)	0.22414 (11)	0.0286 (5)
H2	1.3750	0.8966	0.2234	0.034*
C1	0.8241 (3)	1.0016 (2)	0.08897 (14)	0.0287 (6)
C2	0.7827 (3)	1.1031 (2)	0.12682 (14)	0.0281 (6)
H2A	0.8595	1.1589	0.1275	0.034*
C3	0.8184 (3)	1.0024 (2)	0.17075 (13)	0.0280 (6)
H3A	0.9138	1.0058	0.1936	0.034*
C4	0.7151 (4)	0.9388 (2)	0.04695 (15)	0.0370 (7)
H4A	0.6261	0.9369	0.0737	0.055*
H4B	0.7487	0.8644	0.0391	0.055*
H4C	0.6996	0.9744	0.0007	0.055*
C5	0.9697 (3)	0.9970 (3)	0.05666 (17)	0.0428 (8)
H5A	0.9664	1.0248	0.0076	0.064*
H5B	1.0030	0.9215	0.0562	0.064*
H5C	1.0345	1.0416	0.0851	0.064*
C6	0.6372 (3)	1.1523 (2)	0.12027 (14)	0.0320 (6)
H6A	0.5649	1.0947	0.1256	0.038*
H6B	0.6228	1.2062	0.1589	0.038*
C7	0.7133 (3)	0.9388 (2)	0.21314 (13)	0.0264 (6)
C8	0.6914 (3)	0.8114 (2)	0.31424 (14)	0.0297 (6)
H8A	0.5976	0.7929	0.2929	0.036*
C9	0.7659 (4)	0.7061 (3)	0.33356 (18)	0.0479 (8)
H9A	0.7639	0.6567	0.2925	0.072*
H9B	0.7176	0.6720	0.3741	0.072*
H9C	0.8641	0.7216	0.3466	0.072*
C10	0.6663 (3)	0.8800 (3)	0.38007 (15)	0.0389 (7)
H10A	0.6260	0.9502	0.3660	0.058*
H10B	0.7561	0.8920	0.4049	0.058*
H10C	0.6004	0.8423	0.4120	0.058*
C11	1.2353 (3)	1.0709 (2)	0.37272 (15)	0.0321 (6)
C12	1.2361 (3)	0.9684 (2)	0.41652 (14)	0.0282 (6)
H12A	1.3165	0.9641	0.4511	0.034*
C13	1.2821 (3)	0.9638 (2)	0.33829 (13)	0.0279 (6)
H13A	1.3869	0.9586	0.3326	0.033*
C14	1.0943 (4)	1.1208 (3)	0.35373 (18)	0.0494 (9)
H14A	1.0811	1.1881	0.3809	0.074*
H14B	1.0184	1.0696	0.3655	0.074*
H14C	1.0918	1.1370	0.3025	0.074*
C15	1.3528 (4)	1.1522 (3)	0.38644 (18)	0.0465 (8)
H15A	1.3133	1.2176	0.4086	0.070*
H15B	1.3979	1.1716	0.3411	0.070*
H15C	1.4231	1.1198	0.4185	0.070*
C16	1.1006 (3)	0.9219 (2)	0.44476 (15)	0.0307 (6)
H16A	1.0611	0.9705	0.4819	0.037*
H16B	1.0307	0.9156	0.4056	0.037*
C17	1.2042 (3)	0.9076 (2)	0.28063 (14)	0.0289 (6)
C18	1.2337 (3)	0.8174 (2)	0.16345 (14)	0.0315 (6)
H18A	1.1303	0.8316	0.1576	0.038*
C19	1.3086 (3)	0.8541 (3)	0.09619 (15)	0.0442 (8)
H19A	1.2926	0.9321	0.0891	0.066*
H19B	1.2714	0.8138	0.0551	0.066*
H19C	1.4101	0.8403	0.1008	0.066*
C20	1.2542 (4)	0.6969 (2)	0.17724 (17)	0.0427 (8)
H20A	1.2034	0.6761	0.2208	0.064*
H20B	1.3551	0.6814	0.1832	0.064*
H20C	1.2174	0.6552	0.1366	0.064*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
O1	0.0275 (10)	0.0340 (10)	0.0398 (10)	−0.0030 (9)	−0.0071 (9)	0.0073 (9)
O2	0.0173 (10)	0.0533 (13)	0.0389 (10)	−0.0032 (9)	0.0001 (8)	0.0135 (10)
O3	0.0351 (12)	0.0369 (11)	0.0504 (12)	0.0051 (10)	0.0140 (10)	0.0123 (10)
O4	0.0170 (9)	0.0769 (16)	0.0381 (11)	−0.0034 (11)	−0.0003 (8)	−0.0046 (11)
N1	0.0200 (11)	0.0331 (12)	0.0289 (11)	−0.0030 (10)	−0.0005 (9)	0.0055 (10)
N2	0.0175 (10)	0.0384 (12)	0.0299 (11)	−0.0025 (10)	0.0008 (9)	−0.0020 (10)
C1	0.0235 (14)	0.0336 (14)	0.0290 (13)	0.0024 (12)	0.0038 (11)	0.0071 (12)
C2	0.0211 (13)	0.0326 (14)	0.0306 (13)	−0.0036 (12)	−0.0021 (11)	0.0038 (12)
C3	0.0183 (13)	0.0355 (15)	0.0303 (13)	−0.0028 (11)	0.0002 (10)	0.0056 (12)
C4	0.0430 (17)	0.0373 (15)	0.0306 (13)	−0.0019 (14)	0.0012 (13)	0.0005 (12)
C5	0.0321 (17)	0.0566 (19)	0.0397 (16)	0.0110 (15)	0.0106 (13)	0.0122 (16)
C6	0.0296 (14)	0.0322 (14)	0.0342 (14)	0.0035 (12)	0.0012 (12)	0.0016 (12)
C7	0.0222 (13)	0.0326 (13)	0.0245 (12)	−0.0019 (11)	−0.0005 (11)	−0.0001 (11)
C8	0.0271 (15)	0.0330 (15)	0.0291 (13)	−0.0041 (12)	0.0012 (11)	0.0057 (11)
C9	0.059 (2)	0.0370 (16)	0.0481 (18)	0.0053 (17)	0.0123 (17)	0.0107 (14)
C10	0.0395 (17)	0.0424 (16)	0.0348 (15)	0.0007 (15)	0.0027 (13)	0.0011 (13)
C11	0.0330 (15)	0.0273 (13)	0.0359 (14)	0.0038 (12)	0.0047 (13)	0.0027 (11)
C12	0.0248 (14)	0.0315 (14)	0.0284 (12)	0.0008 (12)	−0.0006 (11)	0.0024 (11)
C13	0.0196 (13)	0.0321 (14)	0.0319 (13)	0.0012 (12)	0.0022 (11)	−0.0002 (11)
C14	0.048 (2)	0.0483 (18)	0.0523 (19)	0.0195 (18)	0.0151 (16)	0.0168 (16)
C15	0.056 (2)	0.0368 (16)	0.0469 (18)	−0.0090 (16)	0.0116 (17)	−0.0012 (14)
C16	0.0282 (15)	0.0316 (14)	0.0322 (13)	0.0024 (12)	0.0026 (12)	0.0042 (12)
C17	0.0180 (13)	0.0384 (15)	0.0304 (13)	0.0011 (11)	−0.0017 (11)	0.0059 (12)
C18	0.0208 (13)	0.0446 (16)	0.0291 (13)	−0.0036 (13)	−0.0025 (11)	0.0002 (12)
C19	0.0355 (17)	0.067 (2)	0.0299 (14)	−0.0078 (16)	0.0013 (13)	0.0012 (15)
C20	0.0419 (19)	0.0409 (16)	0.0454 (17)	−0.0066 (15)	−0.0034 (15)	−0.0043 (14)

Geometric parameters (Å, º) top

O1—C6	1.437 (3)	C9—H9A	0.9800
O1—H1A	0.8400	C9—H9B	0.9800
O2—C7	1.237 (3)	C9—H9C	0.9800
O3—C16	1.421 (3)	C10—H10A	0.9800
O3—H3	0.8400	C10—H10B	0.9800
O4—C17	1.242 (3)	C10—H10C	0.9800
N1—C7	1.342 (3)	C11—C12	1.504 (4)
N1—C8	1.460 (3)	C11—C14	1.511 (4)
N1—H1	0.8800	C11—C15	1.517 (4)
N2—C17	1.343 (3)	C11—C13	1.531 (4)
N2—C18	1.457 (3)	C12—C16	1.500 (4)
N2—H2	0.8800	C12—C13	1.528 (4)
C1—C2	1.488 (4)	C12—H12A	1.0000
C1—C5	1.506 (4)	C13—C17	1.478 (4)
C1—C4	1.510 (4)	C13—H13A	1.0000
C1—C3	1.531 (4)	C14—H14A	0.9800
C2—C6	1.509 (4)	C14—H14B	0.9800
C2—C3	1.525 (4)	C14—H14C	0.9800
C2—H2A	1.0000	C15—H15A	0.9800
C3—C7	1.493 (4)	C15—H15B	0.9800
C3—H3A	1.0000	C15—H15C	0.9800
C4—H4A	0.9800	C16—H16A	0.9900
C4—H4B	0.9800	C16—H16B	0.9900
C4—H4C	0.9800	C18—C19	1.513 (4)
C5—H5A	0.9800	C18—C20	1.516 (4)
C5—H5B	0.9800	C18—H18A	1.0000
C5—H5C	0.9800	C19—H19A	0.9800
C6—H6A	0.9900	C19—H19B	0.9800
C6—H6B	0.9900	C19—H19C	0.9800
C8—C10	1.512 (4)	C20—H20A	0.9800
C8—C9	1.518 (4)	C20—H20B	0.9800
C8—H8A	1.0000	C20—H20C	0.9800

C6—O1—H1A	106.9	H10A—C10—H10B	109.5
C16—O3—H3	110.2	C8—C10—H10C	109.5
C7—N1—C8	123.2 (2)	H10A—C10—H10C	109.5
C7—N1—H1	117.1	H10B—C10—H10C	109.5
C8—N1—H1	117.3	C12—C11—C14	118.2 (2)
C17—N2—C18	124.0 (2)	C12—C11—C15	117.1 (3)
C17—N2—H2	120.5	C14—C11—C15	114.8 (3)
C18—N2—H2	115.3	C12—C11—C13	60.44 (17)
C2—C1—C5	117.7 (3)	C14—C11—C13	120.3 (3)
C2—C1—C4	119.8 (2)	C15—C11—C13	115.2 (2)
C5—C1—C4	113.4 (3)	C16—C12—C11	120.5 (2)
C2—C1—C3	60.66 (17)	C16—C12—C13	124.5 (2)
C5—C1—C3	115.7 (2)	C11—C12—C13	60.68 (17)
C4—C1—C3	120.0 (2)	C16—C12—H12A	113.7
C1—C2—C6	122.6 (2)	C11—C12—H12A	113.7
C1—C2—C3	61.09 (17)	C13—C12—H12A	113.7
C6—C2—C3	124.9 (2)	C17—C13—C12	125.1 (2)
C1—C2—H2A	112.9	C17—C13—C11	124.4 (2)
C6—C2—H2A	112.9	C12—C13—C11	58.88 (17)
C3—C2—H2A	112.9	C17—C13—H13A	112.8
C7—C3—C2	124.3 (2)	C12—C13—H13A	112.8
C7—C3—C1	123.5 (2)	C11—C13—H13A	112.8
C2—C3—C1	58.25 (17)	C11—C14—H14A	109.5
C7—C3—H3A	113.3	C11—C14—H14B	109.5
C2—C3—H3A	113.3	H14A—C14—H14B	109.5
C1—C3—H3A	113.3	C11—C14—H14C	109.5
C1—C4—H4A	109.5	H14A—C14—H14C	109.5
C1—C4—H4B	109.5	H14B—C14—H14C	109.5
H4A—C4—H4B	109.5	C11—C15—H15A	109.5
C1—C4—H4C	109.5	C11—C15—H15B	109.5
H4A—C4—H4C	109.5	H15A—C15—H15B	109.5
H4B—C4—H4C	109.5	C11—C15—H15C	109.5
C1—C5—H5A	109.5	H15A—C15—H15C	109.5
C1—C5—H5B	109.5	H15B—C15—H15C	109.5
H5A—C5—H5B	109.5	O3—C16—C12	109.0 (2)
C1—C5—H5C	109.5	O3—C16—H16A	109.9
H5A—C5—H5C	109.5	C12—C16—H16A	109.9
H5B—C5—H5C	109.5	O3—C16—H16B	109.9
O1—C6—C2	110.4 (2)	C12—C16—H16B	109.9
O1—C6—H6A	109.6	H16A—C16—H16B	108.3
C2—C6—H6A	109.6	O4—C17—N2	121.8 (3)
O1—C6—H6B	109.6	O4—C17—C13	124.1 (3)
C2—C6—H6B	109.6	N2—C17—C13	114.1 (2)
H6A—C6—H6B	108.1	N2—C18—C19	109.6 (2)
O2—C7—N1	122.4 (2)	N2—C18—C20	110.3 (2)
O2—C7—C3	124.1 (2)	C19—C18—C20	111.9 (3)
N1—C7—C3	113.4 (2)	N2—C18—H18A	108.3
N1—C8—C10	110.7 (2)	C19—C18—H18A	108.3
N1—C8—C9	110.6 (2)	C20—C18—H18A	108.3
C10—C8—C9	110.8 (2)	C18—C19—H19A	109.5
N1—C8—H8A	108.2	C18—C19—H19B	109.5
C10—C8—H8A	108.2	H19A—C19—H19B	109.5
C9—C8—H8A	108.2	C18—C19—H19C	109.5
C8—C9—H9A	109.5	H19A—C19—H19C	109.5
C8—C9—H9B	109.5	H19B—C19—H19C	109.5
H9A—C9—H9B	109.5	C18—C20—H20A	109.5
C8—C9—H9C	109.5	C18—C20—H20B	109.5
H9A—C9—H9C	109.5	H20A—C20—H20B	109.5
H9B—C9—H9C	109.5	C18—C20—H20C	109.5
C8—C10—H10A	109.5	H20A—C20—H20C	109.5
C8—C10—H10B	109.5	H20B—C20—H20C	109.5

C5—C1—C2—C6	139.5 (3)	C14—C11—C12—C16	−4.3 (4)
C4—C1—C2—C6	−5.2 (4)	C15—C11—C12—C16	139.9 (3)
C3—C1—C2—C6	−115.0 (3)	C13—C11—C12—C16	−115.0 (3)
C5—C1—C2—C3	−105.5 (3)	C14—C11—C12—C13	110.8 (3)
C4—C1—C2—C3	109.8 (3)	C15—C11—C12—C13	−105.0 (3)
C1—C2—C3—C7	−111.2 (3)	C16—C12—C13—C17	−3.9 (4)
C6—C2—C3—C7	0.1 (4)	C11—C12—C13—C17	−112.5 (3)
C6—C2—C3—C1	111.4 (3)	C16—C12—C13—C11	108.6 (3)
C2—C1—C3—C7	112.7 (3)	C12—C11—C13—C17	113.6 (3)
C5—C1—C3—C7	−138.6 (3)	C14—C11—C13—C17	6.2 (4)
C4—C1—C3—C7	3.2 (4)	C15—C11—C13—C17	−138.2 (3)
C5—C1—C3—C2	108.7 (3)	C14—C11—C13—C12	−107.3 (3)
C4—C1—C3—C2	−109.5 (3)	C15—C11—C13—C12	108.2 (3)
C1—C2—C6—O1	−74.7 (3)	C11—C12—C16—O3	171.1 (2)
C3—C2—C6—O1	−150.0 (2)	C13—C12—C16—O3	97.7 (3)
C8—N1—C7—O2	−8.4 (4)	C18—N2—C17—O4	−4.6 (4)
C8—N1—C7—C3	172.5 (2)	C18—N2—C17—C13	175.1 (2)
C2—C3—C7—O2	16.9 (4)	C12—C13—C17—O4	22.4 (4)
C1—C3—C7—O2	−54.9 (4)	C11—C13—C17—O4	−51.1 (4)
C2—C3—C7—N1	−164.0 (2)	C12—C13—C17—N2	−157.3 (2)
C1—C3—C7—N1	124.3 (3)	C11—C13—C17—N2	129.2 (3)
C7—N1—C8—C10	−85.8 (3)	C17—N2—C18—C19	147.4 (3)
C7—N1—C8—C9	151.0 (3)	C17—N2—C18—C20	−89.0 (3)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1—H1A···O3ⁱ	0.84	1.96	2.796 (3)	174
O3—H3···O1ⁱⁱ	0.84	1.98	2.782 (3)	160
N1—H1···O4	0.88	2.03	2.906 (3)	176
N2—H2···O2ⁱⁱⁱ	0.88	2.09	2.964 (3)	171

Symmetry codes: (i) −x+2, y+1/2, −z+1/2; (ii) −x+3/2, −y+2, z+1/2; (iii) x+1, y, z.

Experimental details

Crystal data
Chemical formula	C₁₀H₁₉NO₂
M_r	185.26
Crystal system, space group	Orthorhombic, P2₁2₁2₁
Temperature (K)	173
a, b, c (Å)	9.4628 (19), 12.298 (3), 18.710 (4)
V (Å³)	2177.4 (8)
Z	8
Radiation type	Cu Kα
µ (mm⁻¹)	0.62
Crystal size (mm)	0.53 × 0.43 × 0.39

Data collection
Diffractometer	Rigaku R-AXIS Rapid IP area-detector diffractometer
Absorption correction	Multi-scan (ABSCOR; Higashi, 1995)
T_min, T_max	0.734, 0.794
No. of measured, independent and observed [I > 2σ(I)] reflections	15043, 2271, 2129
R_int	0.046
(sin θ/λ)_max (Å⁻¹)	0.602

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.042, 0.110, 1.06
No. of reflections	2271
No. of parameters	240
No. of restraints	?
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.26, −0.19

Computer programs: RAPID-AUTO (Rigaku, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1—H1A···O3ⁱ	0.84	1.96	2.796 (3)	174.1
O3—H3···O1ⁱⁱ	0.84	1.98	2.782 (3)	159.6
N1—H1···O4	0.88	2.03	2.906 (3)	175.5
N2—H2···O2ⁱⁱⁱ	0.88	2.09	2.964 (3)	170.7

Symmetry codes: (i) −x+2, y+1/2, −z+1/2; (ii) −x+3/2, −y+2, z+1/2; (iii) x+1, y, z.

Acknowledgements

Financial support from the National Natural Science Foundation of China (grant Nos. 20472111 and 20742004) is gratefully acknowledged.

References

Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan. Google Scholar
Huang, P. Q., Zheng, X. & Deng, X. M. (2001). Tetrahedron Lett. 42, 9039–9041. Web of Science CrossRef CAS Google Scholar
Na, R. & Wang, M. (2009). Acta Cryst. E65, o1230. Web of Science CSD CrossRef IUCr Journals Google Scholar
Rigaku (2001). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef IUCr Journals Google Scholar
Wang, B., Ye, N., Li, Z., Zhong, J. & Hou, S. (2009). Acta Cryst. E65, o2474. Web of Science CSD CrossRef IUCr Journals Google Scholar