Chelation control in the [3+3] annulation reaction of alkoxy-substituted 1,1-diacylcyclopropanes with 1,3-bis(trimethylsilyloxy)-1,3-butadienes
作者:Jennifer Hefner、Peter Langer
DOI:10.1016/j.tetlet.2008.05.066
日期:2008.7
Functionalized arenes were prepared by chelation-controlled '[3+3] cyclization/homo-Michael' reactions of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with benzyloxy-or methoxy-substituted 1,1-diacylcyclopropanes. (c) 2008 Elsevier Ltd. All rights reserved.
Chelation Control in the [3 + 3] Annulation Reaction of Alkoxy-Substituted 1,1-Diacylcyclopropanes with 1,3-Bis(trimethylsilyloxy)-1,3-butadienes. Diversity-Oriented Synthesis of Isochromanes
chelation-controlled [3 + 3] cyclization/cyclopropane opening reactions of 1-trimethylsilyloxy-1,3-butadienes with benzyloxy- or methoxy-substituted 1,1-diacylcyclopropanes. A number of benzyloxy-substituted derivatives were transformed into isochromanes by deprotection and subsequent cyclization. Mixed chromanes−isochromanes were prepared starting with 1,3-bis(silyloxy)-1,3-butadienes containing a remote