Direct Formylation of Enol Ethers Using Cyanuric Chloride and<i>N,N</i>-Dimethylformamide
作者:Duen-Ren Hou、Chong-Si Sun、Wu-Sian Sie、Jing-Yu Jian、Yun Hsu
DOI:10.1002/jccs.200400101
日期:2004.6
A new method to prepare α,β-unsaturated enol aldehydes is described. 3-Ethoxymethacrolein (1) and 5-formyl-3,4-dihydro-2H-pyran (5) were effectively prepared from enol ethers and the Vilsmeier-Haack type complex, derived from cyanuric chloride and DMF. One byproduct, amidine 4, was also characterized.
介绍了一种制备α,β-不饱和烯醇醛的新方法。3-Ethoxymethacrolein (1) 和 5-formyl-3,4-dihydro-2H-pyran (5) 由烯醇醚和 Vilsmeier-Haack 型络合物有效制备,该络合物衍生自氰尿酰氯和 DMF。还表征了一种副产物脒 4。