A general and practicalmethod for the construction of various 3,4,5-trisubstituted 1,2,4-triazoles via I2-catalyzed cycloaddition of N-functionalized amidines with hydrazones is reported. This strategy features cheap and readily available catalyst and starting materials, broader substrate scope, and moderate-to-good yields. The mechanism study shows that the existence of hydrogen on the nitrogen of
报道了一种通过 I 2催化N官能化脒与腙的环加成反应构建各种 3,4,5-三取代 1,2,4-三唑的通用且实用的方法。该策略的特点是廉价且易于获得的催化剂和起始材料、更广泛的底物范围以及中等至良好的产率。机理研究表明,腙氮上氢的存在对于这种转变至关重要。
CCCV.—1 : 3 : 4-Triazoles
作者:Kashmiri Lal Bhagat、Jnanendra Nath Rây
DOI:10.1039/jr9300002357
日期:——
Notes: Preparation of Triaryl-s-triazoles from Diaroylhydrazines
作者:Erwin Klingsberg
DOI:10.1021/jo01101a629
日期:1958.7
CHIRIAC, C. I., REV. ROUM. CHIM., 1982, 27, N 5, 645-649
作者:CHIRIAC, C. I.
DOI:——
日期:——
CHIRIAC, C. I., REV. ROUM. CHIM., 1983, 28, N 11-12, 977-980