thionyl chloride; N,N-dimethyl-formamide in benzene
4 h; Heating;
参考文献
Costa, Ana M. B. S. R. C. S.; Dean, Francis M.; Jones, Michael A.; Varma, Rajender S.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1985 , p. 799 - 808