4-(P-トルイジノ)-2,6,7,8-テトラヒドゴイミダゾ[1,2-a][1,3,5]トリアジン-2-オンの合成

2-Chloro-4-(2-chloroethyl amino)-6-alkoxy-1, 3, 5-triazine reacted with p-toluidine at 120-130°C to give 4-(p-toluidino)-2, 6, 7, 8-tetrahydroimidazo[1, 2-a][1, 3, 5]triazin-2-one [5] in a good yield. But when the reaction was carried out at 80°C, the product was 2-(p-toluidino)4-(2-chloroethyl amino)-6-alkoxy-1, 3, 5-triazine [4]. Reaction of [4] with p-toluidine at 120-130°C did not give [5].