Tris(2-methoxyphenyl)bismuthane as a dehydrating agent with high template ability: an efficient single-step synthesis of macrocyclic diesters from diacid anhydrides and glycols
作者:Takuji Ogawa、Akemi Yoshikawa、Hidemi Wada、Chie Ogawa、Noboru Ono、Hitomi Suzuki
DOI:10.1039/c39950001407
日期:——
Tris(2-methoxyphenyl)bismuthane works as both a mild dehydrating agent and a good template for macrocyclic ester synthesis; prolonged heating of the bismuthane with a dicarboxylic acid anhydride and a glycol in toluene under reflux afforded the corresponding macrocyclic 1:1 diester in moderate to good yields, together with a small amount of a macrocyclic 2:2 tetraester.
三(2-甲氧基苯基)铋既是温和的脱水剂,又是大环酯合成的良好模板;将铋烷与二羧酸酐和二醇在甲苯中在回流下长时间加热,以中等至良好的收率得到相应的大环1:1二酯,以及少量的大环2:2四酯。