Bw. Gung et al., REGIOFACIAL AND DIASTEREOFACIAL SELECTIVE HYDROBORATION OF CHIRAL ALLYLIC STANNANES, SILANES, AND GERMANES, Synthetic communications, 24(2), 1994, pp. 167-173
Hydroboration of the chiral allylic metals (1a-1e) gave regiospecifica
lly 1,3-diol. Greater than 95% of syn-1,3-diol was obtained with 9-BBN
, while a 50:50 mixture of syn and anti-1,3-diol was produced with BH3
. The chiral allylic alcohol, 2,2-dimethyl-4-hexen-3-ol (1f), produced
anti-1,2-diol.