The first catalytic asymmetric inverse electron demand 1,3‐dipolar cycloaddition of azomethine imines with enecarbamates has been developed. Isoquinoline‐fused pyrazolidines containing two or three contiguous stereogenic centers were obtained in high yields with excellent regio‐, diastereo‐, and enantioselectivities. The pyrazolidine ring can be opened to install an aminal, α‐amino nitrile, or homoallylamine
已开发出第一个催化不对称逆电子需求的偶氮甲
亚胺与烯
甲胺酸酯的1,3-偶极环加成反应。含有两个或三个连续立体异构中心的
异喹啉融合的
吡唑烷类化合物以高产率获得,具有出色的区域,非对映和对映选择性。可以打开
吡唑烷环以安装
氨基,α-
氨基腈或高
烯丙胺功能,并很好地控制新生成的立体异构中心。还记录了使用
氨基苯并[a]
喹啉嗪的方法。