Direct Formation of Reactive Alkynyltrichlorotins from 1-Alkynes, SnCl<sub>4</sub>, and Bu<sub>3</sub>N. A Mild Alkynylation Reagent of Aldehydes, Acetals, and Enones
A reagent system of 1-alkyne, SnCl4, and Bu3N alkynylates aldehydes, acetals, and enones under mild reaction conditions giving acetylenic alcohols, acetylenic ethers, and acetylenic ketones, respectively, in high yields. Alkynyltrichlorotins are shown to be the reactive species for these reactions.
Gold catalyzed hydrofluorination of propargyl alcohols promoted by fluorine-hydrogen bonding
作者:Hui Yang、Shaowen Wang、Jie Wang、Xiangsheng Xu、Xiaoqing Li
DOI:10.1039/d3cc02275g
日期:——
The hydroxyl group was discovered to promote gold catalyzed hydrofluorination of alkynes via hydrogen bonding interaction. Based on this strategy, propargyl alcohols could be hydrofluorinated smoothly using Et3N·3HF under acidic additive-free conditions, which provided a straightforward alternative protocol for the synthesis of 3-fluoroallyl alcohols.