Inner–outer ring 1,3-bis(trimethylsilyloxy)-1,3-dienes as useful intermediates in the synthesis of helicenes
作者:Ma̱ del Mar Real、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1016/s0040-4039(02)02246-3
日期:2002.12
and [5]helicenes were synthesised in five steps from tetrahydronaphthalenone and tetrahydrophenanthrenone compounds using a novel synthetic approach based on a Diels–Alderreaction between inner–outer ring 1,3-bis(trimethylsilyloxy)-1,3-dienes and benzyne or quinones.
基于内外环1,3-bis(-)之间的狄尔斯-阿尔德反应的新颖合成方法,从四氢萘酮和四氢菲蒽酮化合物通过五步合成了功能化的苯并[ c ]菲([4]螺旋)和[5]三甲基甲硅烷氧基)-1,3-二烯和苯炔或醌。
Abstract A simple, efficient two-step synthesis of hexahelicenes 1 and 2 is described. The preparation of the new diene 3 and its Diels-Alder cycloaddition with 2-inden-1-one is discussed.