Stereoselective Construction of Acyclic β,β-Disubstituted Enesulfinamides via Conjugate Addition of Organocuprates to α-Substituted α,β-Unsaturated <i>N</i>-Sulfinyl Ketimines
作者:Nuermaimaiti Yisimayili、Chong-Lin Zhu、Tao Liu、Yun Yao、Chong-Dao Lu
DOI:10.1021/acs.orglett.3c02060
日期:2023.7.28
In the presence of boron trifluoride, conjugate addition of organocuprates to α-substituted α,β-unsaturated N-tert-butanesulfinyl ketimines provides facile access to acyclic β,β-disubstituted enesulfinamides with high ratios of geometric isomers. Diverse and challenging to synthesize, multisubstituted aza-enolates bearing two electronically and sterically similar β-substituents, which are important
在三氟化硼存在下,有机铜酸酯与α-取代的α,β-不饱和N-叔丁亚磺酰基酮亚胺共轭加成,可以轻松获得具有高几何异构体比例的无环β,β-二取代烯亚磺酰胺。具有两个电子和空间相似的β-取代基的多取代氮杂烯醇盐的合成具有多样性和挑战性,是在酮亚胺的α位上不对称构建不易接近的无环四元或四取代立体中心的重要前体,可以在良好的条件下有效地制备。具有高立体控制的产量。