TMSOTf-Promoted Addition of Alkynes to Aldehydes: A Novel Synthesis of Chroman-4-ones
作者:Ji Yeon Park、Punna Reddy Ullapu、Hyunah Choo、Jae Kyun Lee、Sun-Joon Min、Ae Nim Pae、Youseung Kim、Du-Jong Baek、Yong Seo Cho
DOI:10.1002/ejoc.200800782
日期:2008.11
A novel synthetic method to prepare chalcones 2 and chroman-4-ones 3 by TMSOTf-promoted addition of alkynes 1 to various aldehydes has been developed. The ratios of chalcones 2, chroman-4-ones 3 and hydrated products 4 varied depending upon the substituents R (nBu, phenyl, H and TMS) on the alkynes 1. We also describe the transformation of the chalcones 2 to the corresponding chroman-4-ones 3 under
开发了一种通过 TMSOTf 促进的炔烃 1 与各种醛的加成来制备查耳酮 2 和色满 4-酮 3 的新合成方法。查耳酮 2、色满 4-ones 3 和水合产物 4 的比例因炔烃 1 上的取代基 R(nBu、苯基、H 和 TMS)而异。我们还描述了查耳酮 2 向相应色满的转化基本条件下4个3。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)