作者:James T. Fletcher、Joseph A. Christensen、Eric M. Villa
DOI:10.1016/j.tetlet.2017.10.023
日期:2017.11
tandem method for preparing 4-formyl-1,2,3-triazoles via a two-step one-pot acetal cleavage/CuAAC reaction was developed. Using this method, 4-formyl-1,2,3-triazole analogs with both electron-withdrawing and electron-donating substituents were prepared in good yield and purity. Expansion of this method to a three-step tandem reaction that incorporates an additional step of azide substitution was also successful
开发了一种通过两步一锅缩醛裂解/ CuAAC反应制备4-甲酰基1,2,3-三唑的串联方法。使用这种方法,可以以良好的收率和纯度制备同时具有吸电子和供电子取代基的4-甲酰基-1,2,3-三唑类似物。该方法已成功扩展为三步串联反应,其中引入了叠氮化物取代的附加步骤,从而避免了有机叠氮化物分离的需要。这种一锅法在其简单性和温和条件下值得注意,它利用了实用的,易于获得的反应物,并依赖于质子溶剂来促进酸催化的缩醛裂解。