Fluorinated [1,2,4]triazolo[1,5-a]pyrimidines and [1,2,4]triazolo[5,1-c][1,2,4]triazines*
摘要:
The reaction of 3-R-5-amino-1,2,4-triazoles with the ethyl ester of 2-fluoroacetoacetic acid gave 2-R-fluoro[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-ones. The reaction of a 3-R-1,2,4-triazolyl-5-diazonium salt with the ethyl ester of 2-fluoroacetoacetic acid and subsequent cyclization of the triazolylhydrazones lead to 7-R-3-fluoro[1,2,4]triazolo[5,1-c][1,2,4]triazin-4(1H)-ones.
Fluorinated [1,2,4]triazolo[1,5-a]pyrimidines and [1,2,4]triazolo[5,1-c][1,2,4]triazines*
作者:E. N. Ulomskiy、N. R. Medvedeva、A. V. Shchepochkin、O. S. Eltsov、V. L. Rusinov、O. N. Chupakhin、E. G. Deeva、O. I. Kiselev
DOI:10.1007/s10593-011-0887-9
日期:2011.12
The reaction of 3-R-5-amino-1,2,4-triazoles with the ethyl ester of 2-fluoroacetoacetic acid gave 2-R-fluoro[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-ones. The reaction of a 3-R-1,2,4-triazolyl-5-diazonium salt with the ethyl ester of 2-fluoroacetoacetic acid and subsequent cyclization of the triazolylhydrazones lead to 7-R-3-fluoro[1,2,4]triazolo[5,1-c][1,2,4]triazin-4(1H)-ones.