Synthesis of Phosphaisocoumarins via Iodocyclization
作者:Ai-Yun Peng、Yi-Xiang Ding
DOI:10.1021/ol0499506
日期:2004.4.1
4-lodophosphaisocoumarins can be prepared in good yield and with high regioselectivity under mild conditions by the reaction of o-(1-alkynyl)phenylphosphonates with I-2 or ICI. The present reaction represents the first example of a phosphonate iodocyclization onto a C-C triple bond. The resulting iodides can be further elaborated using palladium-catalyzed coupling reactions.