反应条件
1: 100 percent / N,N-diisopropylethylamine / dimethylformamide / 1) 0 deg C, 1 h, 2) rt, 4 h
2: 1) lithium hexamethyldisilylamide / 1) THF, -78 deg C, 30 min, 2) THF, -78 deg C, 1 h, then rt, 48 h
3: H2SO4, glacial acetic acid / 3 h / 95 - 100 °C
View Scheme
参考文献
Nagarathnam, Dhanapalan; Cushman, Mark
Tetrahedron, 1991 , vol. 47, # 28 p. 5071 - 5076
