Asymmetric Synthesis of 2°- and 3°-Carbinols via <i>B</i>-Methallyl-10-(TMS and Ph)-9-borabicyclo[3.3.2]decanes
作者:José G. Román、John A. Soderquist
DOI:10.1021/jo701633k
日期:2007.12.1
[GRAPHICS]Simple Grignard procedures provide methallylboranes la and 1b in enantiomerically pure form from air-stable precursors in 98% and 95% yields, respectively. These reagents add smoothly to aldehydes and methyl ketones, respectively, providing branched 2 degrees- (6, 69-89%, 94-99% ee) and 3 degrees-(10, 71-87%, 74-96% ee) homoallylic alcohols.
Chiral synthesis via organoboranes. 6. Asymmetric allylboration via chiral allyldialkylboranes. Synthesis of homoallylic alcohols with exceptionally high enantiomeric excess
作者:Prabhakar K. Jadhav、Krishna S. Bhat、P. Thirumalai Perumal、Herbert C. Brown
DOI:10.1021/jo00354a003
日期:1986.2
Asymmetric methallylboration of prochiral aldehydes with methallyldiisopinocampheylborane·synthesis of 2-methyl-1-alken-4-ols in ≥ 90% enantiomeric purities
作者:Herbert C. Brown、Prabhakar K. Jadhav、P.Thirumalai Perumal
DOI:10.1016/s0040-4039(01)81537-9
日期:1984.1
BROWN, H. C.;JADHAV, P. K.;PERUMAL, P. T., TETRAHEDRON LETT., 1984, 25, N 45, 5111-5114