The structures of the dihydro derivatives of 5,6-diaryl-1,2,4-triazines and of the products from the title reactions have been reassigned as 5,6-diaryl-2,5-dihydro-1,2,4-triazines (a-g) and 2,6-diaryl-4-methyl-5-substituted-1,8-bis-methoxycarbonyl-3,4,7-triaza-bicyclo[3.3.0]octa-2,7-dienes (a-g), respectively.
5,6-二芳基-
1,2,4-三嗪的二氢衍
生物和标题反应产物的结构已重新指定为5,6-二芳基-2,5-二氢-
1,2,4-三嗪(ag)和2,6-二芳基-4-甲基-5-取代-1,8-双-甲氧基羰基-3,4,7-三
氮杂双环[3.3.0] octa-2,7-二烯(ag ), 分别。