Synthetic Approaches Towards 1,2,4-Triazines Utilizing Wittig and Wittig-Horner Reagents
作者:Mona H. N. Arsanious、Maysa E. Moharam
DOI:10.1080/10426500802077606
日期:2008.8.4
products 5a-5d , and triphenylphosphine oxide. Moreover, benzoylmethylenetriphenylphosphorane ( 1c ) reacts with 5-[(4-methoxyphenyl) carbonyl]-3-phenyl-1,2,4-triazin-6(1H)-one ( 2b ) to yield 4e and triphenylphosphine oxide. On the other hand, the application of phosphorus ylides on 5-[(hydroxyimino) (4-methoxyphenyl)methyl]-3-phenyl-1,2,4-triazin-6(1H)-one ( 3b ) render the new product tetraazab
5-芳酰基-1,2,4-三嗪-6(1H)-酮 2a、2b 与甲氧基羰基-、乙氧基羰基-、亚甲基三苯基正膦 (1a,1b) 的反应得到烯烃加合物 4a-4d、吡喃三嗪产物 5a-5d、和三苯基氧化膦。此外,苯甲酰基亚甲基三苯基正膦 (1c) 与 5-[(4-甲氧基苯基) 羰基]-3-苯基-1,2,4-triazin-6(1H)-one (2b) 反应生成 4e 和三苯基氧化膦。另一方面,磷叶立德在5-[(羟基亚氨基) (4-甲氧基苯基)甲基]-3-苯基-1,2,4-triazin-6(1H)-one ( 3b ) 上的应用使新产品四氮杂苯并环庚烯-8-一氧化物 6 和三苯基氧化膦。Trimethylphosphonoacatate 7 与 5-aroyl-1,2,4-triazin-6(1H)-ones 2a, 2b 反应得到 5,6-dihydro-5-hydroxy-3,5-diarylpyrano[3