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-promotedaddition 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
Synthesis of 2′-hydroxychalcones and related compounds in interfacial solid-liquid conditions
作者:A.R. Alcantara、J.Ma. Marinas、J.V. Sinisterra
DOI:10.1016/s0040-4039(01)81030-3
日期:1987.1
A general synthetic method of 2′-hydroxychalcones and 2′-hydroxyphenyl-(2-alkylvynyl) ketones in interfacial solid-liquid conditions, is described. No secondary reactions were observed. The interfacial mechanism is discussed by means of the structure of active sites of solid.