Selective phenylation of naphthoquinones and coumarins using diphenylmercury

摘要

Under the influence of UV light, 1,4-naphthoquinones 1-5 and coumarins 6-10 on reaction with diphenylmercury in acetonitrile under nitrogen atmosphere give corresponding 2-phenyl- 1,4-naphthoquinones 11-15 and 4-phenylcoumarins 16-20.