Six N-maleanilic acids namely N-(4-carboxy)maleanilic acid (CAMAA), N-(4-bromo)maleanilic acid (BMAA), N-(4-hydroxy)maleanilic acid (HMAA), N-(3-hydroxy)maleanilic acid (mHMAA), N-(4-chloro)maleanilic acid (CMAA) and N-(4-methyl)maleanilic acid (MMAA) were prepared by solvent free reaction between maleic anhydride and a 4-carboxy, 4-bromo, 4-hydroxy, 3-hydroxy, 4-chloro and 4-methyl aniline derivatives in good to excellent yield. FT-IR, 1H-NMR and 13C-NMR spectra revealed the confirmation of these compounds in good agreement.
六种N-马来酰胺酸,即N-(4-羧基)马来酰胺酸(CAMAA)、N-(4-
溴基)马来酰胺酸(
BMAA)、N-(
4-羟基)马来酰胺酸(HMAA)、N-(3-羟基)马来酰胺酸(mHMAA)、N-(4-
氯基)马来酰胺酸(CMAA)和N-(4-甲基)马来酰胺酸(
MMAA),均通过无溶剂反应由
马来酸酐和4-羧基、4-
溴基、
4-羟基、3-羟基、4-
氯基及
4-甲基苯胺衍
生物制备,产率优良至极佳。FT-IR、1H-NMR和13C-NMR光谱分析证实了这些化合物的结构,数据良好一致。