作者:Norton P. Peet、Shyam Sunder
DOI:10.1002/jhet.5570130506
日期:1976.10
The synthesis of 1,4-dihydro-4-methyl-1-phenyl-5H-1,3,4-benzotriazepin-5-one (4a) and its 8-chloro analog (4b) is described. Attempted synthesis of the 2-methyl analog of 4a from 2-(phenylamino)benzoic acid 1-methylhydrazide (10) and triethyl orthoaeetate led only to the Schiff base intermediate, 2-(phenylamino)benzoic acid 2-(1-ethoxyethylidene)-1-methylhydrazide (11). Cyclization of 11 was attempted
描述了1,4-二氢-4-甲基-1-甲基-5 H -1,3,4-苯并三氮杂-1-酮(4a)及其8-氯类似物(4b)的合成。试图由2-(苯基氨基)苯甲酸1-甲基酰肼(10)和原乙酸三乙酯合成4a的2-甲基类似物仅导致席夫碱中间体2-(苯基氨基)苯甲酸2-(1-乙氧基亚乙基)- 1-甲基酰肼(11)。尝试使用多种试剂将11环化失败。描述了用三氟乙酸处理11产生的中间反应产物。