reduction of chiral α-alkyl β-ketosulfoxides with DIBAL/ZnBr2 is governed by the configuration at the sulfur (1,3-induction) and not by that of the C-α (1,2-induction) as it has been previously reported. This fact considerably increases the scope of the Solladié's methodology to synthesize optically pure secondary carbinols. Those substituents decreasing the capability of the carbonyl oxygen to chelate
用D
IBAL / ZnBr 2进行的手性α-烷基β-酮亚砜的高度立体选择性还原取决于
硫的构型(1,3-诱导),而不是C-α的构型(1,2-诱导)。先前已有报道。这一事实大大增加了Solladié合成光学纯次生
甲醇的方法的范围。那些降低羰基氧螯合ZnBr 2的能力的取代基引起立体选择性的降低。