Efficient synthesis of substituted piperazinones via tandem reductive amination–cyclization
作者:Christopher J. Dinsmore、C.Blair Zartman
DOI:10.1016/s0040-4039(00)01063-7
日期:2000.8
A new strategy for the preparation of substituted piperazinones features a tandem reductive coupling and S(N)2-cyclization of a 2-chloro-N-(2-oxoalkyl)acetamide (1) and a primary amine (2). The method is convenient for diversity-oriented synthesis, since a wide variety of amines may be used in the ring-forming reaction to produce N-substituted piperazinones (3). (C) 2000 Published by Elsevier Science Ltd.