1: bis-phenylsulfonyl methane With sodium hydride in N,N-dimethyl-formamide
T=0°C;
2: 1-Bromo-2-butyne in N,N-dimethyl-formamide
T=50°C; Further stages.;
参考文献
Cabello, Noemi; Jimenez-Nunez, Eloisa; Bunuel, Elena; Cardenas, Diego J.; Echavarren, Antonio M.
European Journal of Organic Chemistry, 2007 , # 25 p. 4217 - 4223