Catalytic enantioselective ene-type reactions of vinylogous hydrazone: construction of α-methylene-γ-butyrolactone derivatives
作者:Hang Zhang、Qian Yao、Weidi Cao、Shulin Ge、Jinxiu Xu、Xiaohua Liu、Xiaoming Feng
DOI:10.1039/c8cc07567k
日期:——
The catalytic asymmetric ene-type reactions of vinylogous hydrazone were accomplished by using chiral N,N′-dioxide–metal salt complexes as catalysts. A wide range of electrophiles, including isatins, α-ketoester, imines, and aldehydes reacted with (E)-2-methyl-N-(piperidin-1-yl)prop-2-en-1-imine efficiently, affording the corresponding homoallylic alcohols and amines in high yields (up to 99%) with
乙烯基ous的催化不对称烯型反应是通过使用手性N,N'-二氧化物-金属盐络合物作为催化剂来完成的。各种各样的亲电子试剂,包括靛红,α-酮酸酯,亚胺和醛,可以与(E)-2-甲基-N-(哌啶-1-基)丙-2-烯-1-亚胺有效地反应,得到相应的均丙醇和胺,收率高(高达99%),具有出色的ee值(高达99%)。该方法提供了合成生物活性手性α-亚甲基-γ-丁内酯衍生物的简便方法。