反应条件
1: aq. H3PO4 / ethanol
2: (i) BF3-Et2O, ZnCl2, EtOAc, (ii) NaOAc, aq. AcOH
View Scheme
参考文献
Makin,S.M. et al.
Journal of Organic Chemistry USSR (English Translation), 1974 , vol. 10, p. 2061 - 2065
Zhurnal Organicheskoi Khimii, 1974 , vol. 10, p. 2044 - 2049