1: 85percent H3PO4 / 3 h / Ambient temperature
2: pyridine / Ambient temperature
View Scheme
参考文献
Bourne, Gregory T.; Crich, David; Davies, John W.; Horwell, David C.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1991 , # 7 p. 1693 - 1699