Synthesis of benz[f]indole-4,9-diones via acetylenic derivatives of 1,4-naphthoquinone
摘要:
A synthetic route to benz[f]indole-4,9-diones from 1,4-naphthoquinone is described. Effective methods for cross-coupling of 3-acetylamino-2-bromo-1,4-naphthoquinone with terminal acetylenes and cyclization of the resulting 3-acetylamino-2-alkynyl-1,4-naphthoquinones are developed. (C) 2009 Elsevier Ltd. All rights reserved.