Synthesis and thermal rearrangement of 5-diazomethyl-1,2,3-triazoles
作者:Gerrit L'Abbe、Wim Dehaen
DOI:10.1016/s0040-4020(01)85837-3
日期:1988.1
xycarbonyltriazoles are capable of undergoing ring-degenerate rearrangements (19 → 20) when a strong electron-withdrawing substituent (e.g. p-nitrophenyl or o,p-dinitrophenyl) is located at the N-1 position. Whereas the unrearranged diazomethyltriazole 19a decomposes thermally in benzene to give the cycloheptatriene 21a, the rearranged diazo compound 20b yields the norcaradiene 22b. Several methods