Fused Triazines Via a Tandem Wittig/Ring Closure Strategy: Synthesis of Pyrazolo[5,1-<i>c</i>]-1,2,4-Triazines and 1,2,4-Triazolo[5,1-<i>c</i>]-1,2,4-Triazines
作者:Magda A. Barsy
DOI:10.1002/jccs.200300169
日期:2003.12
A new method for the synthesis of azolo[5,1-c]-1,2,4-triazine ring systems is reported by the sequential formation of triazine ring based on the regioselectiveformation of the azophosphoranes from hydrazonyl chlorides, followed by the intermolecular Wittig reaction with carboxylic acid chlorides, phenylisocyanate, and carbon disulfide.