On heating with amines or alcohols in the presence of tris(2-methoxy phenyl)- or tris(2,6-dimethoxyphenyl)bismuthine, carboxylic acids bearing α-hydrogen are readily converted into the corresponding amides or esters in good yields while those without α-hydrogen remain intact.
在三(2-
甲氧基苯基)-或三(2,6-二
甲氧基苯基)
铋碱存在下与胺或醇加热时,带有α-氢的
羧酸很容易以良好的产率转化为相应的酰胺或酯,而不含α-氢的
羧酸很容易转化为相应的酰胺或酯。 α-氢保持完整。