Synthesis of 5-amino-4-cyanopyrazoles via ring opening-ring closure of 5-azido-4-iminomethylpyrazoles isolation of the intermediate
作者:Wim Dehaen、Jan Becher
DOI:10.1016/0040-4039(91)80835-t
日期:1991.7
5-Amino-4-cyanopyrazoles are prepared by thermolysis from 5-azido-4-iminomethylpyrazoles in fair yields. The reaction occurs via a ringopening-ringclosure mechanism. The intermediate azocompound was isolated.