Synthesis of rhazinilam through intramolecular arylcyanation of alkenes catalyzed cooperatively by nickel/aluminum
摘要:
Intramolecular arylcyanation across a tri-substituted double bond proceeds to give a primary alkyl cyanide product through functionalization of C-CN and allylic C-H bonds and double C-C bond formation in a 1,3-manner by cooperative nickel/AlMe2Cl catalysis. The transformation is applied to the synthesis of rhazinilam, a tubulin-binding alkaloid containing unique structural motifs such as axially chiral biaryl and strained nine-membered lactam as well as quaternary carbon. (C) 2015 Elsevier Ltd. All rights reserved.
Total Synthesis of (±)-Rhazinal Using Novel Palladium-Catalyzed Cyclizations
作者:Alfred L. Bowie、Dirk Trauner
DOI:10.1021/jo801791j
日期:2009.2.20
A concise synthesis of (±)-rhazinal that hinges on novel oxidative Heck cyclizations and palladium-catalyzed direct couplings is described. An X-ray structure of N-MOM-rhazinal, which provides insight into the conformation of the strained 9-membered lactam ring, is described.
Intramolecular arylcyanation across a tri-substituted double bond proceeds to give a primary alkyl cyanide product through functionalization of C-CN and allylic C-H bonds and double C-C bond formation in a 1,3-manner by cooperative nickel/AlMe2Cl catalysis. The transformation is applied to the synthesis of rhazinilam, a tubulin-binding alkaloid containing unique structural motifs such as axially chiral biaryl and strained nine-membered lactam as well as quaternary carbon. (C) 2015 Elsevier Ltd. All rights reserved.