Studies on quinazoline chemistry 6*. Synthesis and alkylation of 2-substituted 4,4-diphenyl-3,4-dihydroquinazolines
作者:Elena V. Gromachevskaya、Elena A. Kaigorodova、Leonid D. Konyushkin
DOI:10.1007/s10593-017-2091-z
日期:2017.5
New 2-aryl-4,4-diphenyl-3,4-dihydroquinazolines were obtained by a reaction of (2-aminophenyl)(diphenyl)carbinol with nitriles. Methylation of 3,4-dihydroquinazolines with excess of dimethyl sulfate occurred at two nitrogen atoms, while the subsequent alkaline hydrolysis was accompanied by opening of the heterocycle at the C(2)–N(3) bond, forming the respective amides. The molecular structure of N
通过(2-氨基苯基)(二苯基)甲醇与腈反应获得新的2-芳基-4,4-二苯基-3,4-二氢喹唑啉。3,4-二氢喹唑啉与过量的硫酸二甲酯甲基化发生在两个氮原子上,随后的碱水解伴随着C(2)-N(3)键上杂环的打开,形成了各自的酰胺。的分子结构Ñ甲基ñ - 2 - [(二苯基)(甲基氨基)甲基]苯基}苯甲酰胺用X射线结构分析证实。