Synthesis, infrared spectral studies and theoretical calculations of 4-phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-one (thione)
作者:Hikmet Agirbas、Seda Sagdinc、Fatma Kandemirli、Berat Kemal
DOI:10.1016/j.molstruc.2008.05.023
日期:2008.12
gave 2-((phenylamino)methyl)phenol (3) which was reacted with chloroacetyl chloride to give 2-chloro-N-(2-hydroxybenzyl)-N-phenylacetamide (4). Compound (4) was cyclized to 4phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-one (5) by NaOH in ethanol solution. The treatment of compound (5) with P2S5 gave corresponding 4-phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thione (6). The structures of (5) and (6)
水杨醛 (1) 与苯胺反应得到 2-[(E)-(苯基亚氨基)甲基]苯酚 (2)。用NaBH 4 还原(2)得到2-((苯氨基)甲基)苯酚(3),其与氯乙酰氯反应得到2-氯-N-(2-羟基苄基)-N-苯基乙酰胺(4)。通过乙醇溶液中的NaOH将化合物(4)环化为4苯基-4,5-二氢苯并[f][1,4]恶氮杂-3(2H)-酮(5)。用P2S5处理化合物(5)得到相应的4-苯基-4,5-二氢苯并[f][1,4]氧氮杂-3(2H)-硫酮(6)。(5)和(6)的结构由 1 H NMR和IR光谱确定。(5) 和 (6) 的优化结构参数和振动频率是通过 DFT 计算的,具有 6-31G(d,p) 基组。采用标准3-21G基组的RHF研究了环化反应的机理。2008 Elsevier BV 版权所有。