Preparative synthesis of 4-hydroxy(alkyloyloxy, aryloyloxy)-3-methoxy(ethoxy)phenylmethylene(4-carboxyphenyl)amines
摘要:
By reactions of vanillin, vanillal, and their esters with 4-aminobenzoic acid in methanol formerly unknown E-isomers of azomethines (Schiff's bases) were prepared.