Mercury(II)-Catalyzed Cyclization of 2-Alkynylphenyl Alkyl Sulfoxides Provides 3-Acylbenzo[<i>b</i>]thiophenes
作者:Cheng-Han Lin、Chin-Chau Chen、Ming-Jung Wu
DOI:10.1002/chem.201202704
日期:2013.2.18
Ring cyclization: A mercury‐catalyzed cyclization reaction to provide 3‐benzoylbenzo[b]thiophenes was achieved in good yields by treatment of 2‐alkynylphenyl alkyl sulfoxides with mercury chloride and 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) in benzene heated at reflux for 24 h (see scheme).
环环化:通过用氯化汞和2,3-二氯-5,6-二氰基1-4,4处理2-炔基苯基烷基亚砜,以良好的收率实现了汞催化的环化反应以提供3-苯甲酰基苯并[ b ]噻吩苯中的苯并醌(DDQ)加热回流24小时(请参阅方案)。