Sonogashira coupling with aqueous ammonia directed to the synthesis of azotolane derivatives
作者:Mohamed S. Mohamed Ahmed、Atsunori Mori
DOI:10.1016/j.tet.2004.08.016
日期:2004.10
Sonogashira coupling with aqueous ammonia is tolerable for the reaction of aryl iodides or terminal alkynes bearing an azobenzene group. The reaction of (4-heptyloxyphenyl)ethyne with (4-heptyloxyphenyl)-(4-iodophenyl)diazene in the presence of 1 mol% of PdCl2(PPh3)2, 2 mol% of CuI, and 2 equiv of 0.5 M aqueous ammonia gives the corresponding azotolane in 87% isolated yield after stirring at room temperature
Sonogashira与氨水的偶联可耐受带有偶氮苯基团的芳基碘化物或末端炔烃的反应。(4-碘苯基)二氮烯在1摩尔%的PdCl的存在- (4-庚氧基苯基)乙炔与(4-庚氧基苯基)反应2(PPH 3)2,2%(摩尔)的CuI,和2当量的0.5M的在室温下搅拌15小时后,氨水以87%的分离产率得到相应的偶氮酮。