sulfonyl compounds were prepared using the iridium catalyzed asymmetric hydrogenation reaction. Vinylic, allylic and homoallylic sulfone substitutions were investigated, and high enantioselectivity is maintained regardless of the location of the olefin with respect to the sulfone. Impressive stereoselectivity was obtained for dialkyl substitutions, which typically are challenging substrates in the hydrogenation
使用
铱催化的不对称氢化反应制备了几种手性磺酰基化合物。研究了
乙烯基、烯丙基和高烯丙基砜的取代,无论烯烃相对于砜的位置如何,都保持了高对映选择性。二烷基取代获得了令人印象深刻的立体选择性,这通常是氢化中具有挑战性的底物。正如预期的那样,体积更大的 Z 底物比相应的 E 异构体氢化得更慢,并且对映选择性略低。