Figure 1
(a) The structure of (P)-(Ib), taken from a racemic crystal, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as small spheres of arbitary radii. (b) The proposed conformation after the oxidative addition step of the asymmetric Heck reaction (AHR) using (R)-BINAP, which retains the P relationship between N2—C21—O21 and C21—N2—C25 but requires rotation about C21—C22. |