Microwave-Assisted Synthesis of Substituted Dibenzo[<i>b</i>,<i>f</i>][1,4]thiazepines, Dibenzo[<i>b</i>,<i>f</i>][1,4]oxazepines, Benzothiazoles, and Benzimidazoles
作者:Yu-Chin Lin、Ni-Ching Li、Yie-Jia Cherng
DOI:10.1002/jhet.2003
日期:2014.5
A highly efficient synthesis for possessing 7‐membered rings with two heteroatoms is described, using efficient microwave‐assisted one‐pot method to synthesize (substituted) dibenzo[b,f][1,4]thiazepines [1] and dibenzo[b,f][1,4]oxazepines [2] in high yields (up to 99%) by cyclocondensations of o‐aminothiophenol or o‐aminophenol with o‐halobenzaldehydes, o‐fluoroacetophenone, and o‐fluorobenzophenone
利用高效的微波辅助一锅法合成(取代的)二苯并[ b,f ] [1,4]噻氮平[1]和二苯并[ b ],描述了一种具有两个杂原子的7元环的高效合成方法。通过邻氨基硫酚或邻氨基苯酚与邻卤代苯甲醛,邻氟苯乙酮和邻氟二苯甲酮的环缩合,高产率(高达99%)的f ] [1,4]氧杂氮杂[2] 。在没有碱的情况下,邻氨基苯硫酚与邻卤代苯甲醛反应生成苯并噻唑。