A process for preparing 7-substituted 3,5-dihydroxy- hept-6-enoic acid derivatives in substantially pure 3R,5S-form employing as starting material L-malic acid.
1,3- diastereoselective reduction of β-hydroxyketones utilizing alkoxydialkylboranes
作者:Kau-Ming Chen、Goetz E Hardtmann、Kapa Prasad、Oljan Repič、Michael J Shapiro
DOI:10.1016/s0040-4039(00)95673-9
日期:1987.1
CHEN, KAU-MING;GUNDERSON, KARL G.;HARDTMANN, GOETZ E.;PRASAD, KAPA;REPIC,+, CHEM. LETT.,(1987) N 10, 1923-1926
作者:CHEN, KAU-MING、GUNDERSON, KARL G.、HARDTMANN, GOETZ E.、PRASAD, KAPA、REPIC,+
DOI:——
日期:——
CHEN KAU-MING; HARDTMANN G. E.; PRASAD K.; REPIC O.; SHAPIRO M. J., TETRAHEDRON LETT., 28,(1987) N 2, 155-158
作者:CHEN KAU-MING、 HARDTMANN G. E.、 PRASAD K.、 REPIC O.、 SHAPIRO M. J.
DOI:——
日期:——
A Novel Method for the In situ Generation of Alkoxydialkylboranes and Their Use in the Selective Preparation of 1,3-<i>syn</i>Diols
作者:Kau-Ming Chen、Karl G. Gunderson、Goetz E. Hardtmann、Kapa Prasad、Oljan Repic、Michael J. Shapiro
DOI:10.1246/cl.1987.1923
日期:1987.10.5
An in situ method for generating Et2BOCH3 from triethylborane and methanol without using any other catalysts is described. Using the Et2BOCH3 thus generated as a chelating agent, syn 1,3-diols are prepared in ≥ 98% stereochemical purity by reducing β-hydroxyketones with sodium borohydride.