作者:Hamid Shirani、Jan Bergman、Tomasz Janosik
DOI:10.1016/j.tet.2009.08.014
日期:2009.10
New routes toward fused thiepins and their selenium analogues are described, wherein initial cleavage of suitable diaryl disulfides or selenides bearing masked aldehyde functionalities with an N-protected and metalated indole-3-carbaldehyde acetal or a lithiated 2-bromobenzaldehyde acetal derivative gave a set of unsymmetrical diacetals. Subsequent deacetalization, followed by McMurry coupling, afforded the target unsymmetrical thiepins and selenepins. (C) 2009 Elsevier Ltd. All rights reserved.