反应条件
1: bromine / CS2 / 48 h / 40 °C 2: 1.) n-butyllithium / 1.) hexane, ether, 2 h, 2.) ether, overnight 3: 62 percent / pyridinium dichromate / dimethylformamide / Ambient temperature 4: 1.) polyphosphoric acid (PPA), 2.) 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) / 1.) 110 deg C, 2 h, 2.) benzene, reflux, 30 min View Scheme
参考文献
Cho, Bongsup P.; Harvey, Ronald G.
Journal of Organic Chemistry, 1987 , vol. 52, # 26 p. 5668 - 5678
