反应条件
1: 1.) (CH3)2SO4, 2.) 10percent K2CO3 / 1.) ethyl acetate, reflux, 2 h, 2.) benzene, 80 deg C, 2 h 2: p-TsOH / benzene / 2 h / Heating View Scheme
参考文献
Hayakawa, Satoshi; Michiue, Tohru; Okamoto, Masao; Hatakeyama, Shoko; Ohta, Shunsaku
Heterocycles, 1988 , vol. 27, # 2 p. 457 - 474
