DICYCLOAZAALKANE DERIVATES, PREPARATION PROCESSES AND MEDICAL USES THEREOF
申请人:Shanghai Hengrui Pharmaceutical Co. Ltd.
公开号:EP2246347B1
公开(公告)日:2016-09-28
Use of methyl 2-iodo-2-(phenylsulfonyl)-4-pentenoate in atom-transfer radical cyclizations. Entry into annulation products containing carbonyl or exo-methylene functionality
作者:Daniel L. Flynn、Daniel L. Zabrowski、Roger Nosal
DOI:10.1016/s0040-4039(00)60165-x
日期:1992.11
Methyl 2-iodo-2-(phenylsulfonyl)-4-pentenoate ()is reacted with N-BOC-allylamine to afford substituted 3-azabicyclo-[3.3.0]octanes () in a process which involves an initial iodine atom-transfer annulation followed by an ionic cyclization. The geminal carbomethoxy and phenylsulfonyl groups are then efficiently converted to either an exocyclic olefin or to a carbonyl group. The latter transformation