The synthesis of novel ortho-coumaric acid derivatives, with an amide group linked with an olefin moiety, which introduced photoinduced switching of the intramolecular hydrogen bonds is presented. An intramolecular OH...O=C hydrogen bond formed in a Z-phenol compound was switched to an intramolecular NH...O hydrogen bond in Z phenolate state via deprotonation. The pK(a) value of the Z-phenol derivative
提出了具有与烯烃部分连接的酰胺基的新颖的邻香豆酸衍生物的合成,其引入了分子内氢键的光诱导转换。在Z-苯酚化合物中形成的分子内OH ... O = C氢键通过去质子化转变为Z酚盐状态的分子内NH ... O氢键。Z-苯酚衍生物的pK(a)值低于E-苯酚,并获得了涉及质子化和去质子化过程的新型光循环系统。