Bioresmethrin: (5-benzylfuran-3-yl)methyl 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate

In the title compound, C22H26O3, the dihedral angle between the cyclopropane ring and the plane of the vinyl group is 88.2 (2)°. The dihedral angle between the phenyl and furan rings is 86.09 (8)°. In the crystal, weak intermolecular C—H⋯π contacts together with very weak C—H⋯O hydrogen bonds stack the molecules along the a axis.

In the title compound (Scheme 1, Fig. 1), the dihedral angle between the cyclopropane ring plane and the vinyl group plane is 88.2 (2)°. The dihedral angle between the benzene and furan ring planes in the benzylfuranyl group is 86.09 (8)°.
All bond lengths and bond angles are normal and comparable to those observed in a similar crystal structure (Yang et al.,

Experimental
The title compound was purchased from the Dr. Ehrenstorfer GmbH Company. Slow evaporation of a solution in CH 2 Cl 2 gave single crystals suitable for X-ray analysis.
In the absence of significant anomalous scattering effects, Friedel pairs were merged. Because of this the absolute configuration of the title compound could not be reliably determined from the crystallographic data but has been suggested to be 5-benzyl-3-furylmethyl (1R,3R)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate from information provided by the manufacturers (the Dr. Ehrenstorfer GmbH Company). However, this cannot be confirmed by the present crystallographic determination.  The molecular structure of the title compound. Displacement ellipsoids are drawn at the 50% probability level. H atoms are shown as small spheres of arbitrary radius.

Figure 2
Crystal packing of the title compound with weak intermolecular C-H···π and C-H···O interactions shown as dashed lines. H atoms not involved in intermolecular interactions have been omitted for clarity. (Symmetry codes: (i) x + 1, y, z;  Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.