1: With titanium tetrachloride in dichloromethane T=0°C; 0.5 h; 2: With pyridine in dichloromethane T=0 - 20°C; 3: With sulfur; diethylamine in tetrahydrofuran T=20°C; 2 h;
参考文献
Aurelio, Luigi; Valant, Celine; Flynn, Bernard L.; Sexton, Patrick M.; White, Jonathan M.; Christopoulos, Arthur; Scammells, Peter J.
Journal of Medicinal Chemistry, 2010 , vol. 53, # 18 p. 6550 - 6559