Stereochemically matched sulfinylacetates for double diastereoselection in the spac reaction
作者:Kevin Burgess、Ian Henderson
DOI:10.1016/s0040-4020(01)82313-9
日期:1991.8
which the sulfoxide asymmetry is matched with the inducing effect of the auxiliary give good diastereoselection in SPAC reactions affording γ-hydroxy-α,β-unsaturatod alcohols of high optical purity. Asymmetry at the sulfoxide has a greater effect than the auxiliaries on the stereochemical outcome of these reactions.
从单手性醇制备具有确定的立体化学的4-氯苯基亚磺酰基乙酸酯:化合物(2)来自(+)-薄荷醇;(-)-8-苯基薄荷醇中的3和4;(+)-反式-2-苯基环己醇的5和6 ; (7)和(9)来自(-)-10-二环己基氨磺酰基-D-异冰片醇。亚砜不对称性与助剂的诱导作用相匹配的试剂在SPAC反应中具有良好的非对映选择性,从而提供了具有高光学纯度的γ-羟基-α,β-不饱和醇。亚砜的不对称性比助剂对这些反应的立体化学结果的影响更大。