Synthesis and Structure Analysis of N 1,N 4,3,6-Tetramethyl- N 1,N 4 -Diphenyl-1,4-Dihydro-1,2,4,5-Tetrazine-1,4-Dicarboxamide

Abstract

N¹,N⁴,3,6-Tetramethyl-N¹,N⁴-diphenyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboxamide was prepared from 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine, bis(trichloromethyl) carbonate and N-methylaniline. Its structure was confirmed by single-crystal X-ray diffraction. This reaction yields the title compound rather than N¹,N²,3,6-tetramethyl-N¹,N²-diphenyl-1,2-dihydro-1,2,4,5-tetrazine-1,2- dicarboxamide. The central tetrazine ring of the title compound exhibits a boat conformation and is therefore not homoaromatic.