13 Azomethines have been prepared from 2-amino-9,10-dihydrophenanthrene by reaction with aromatic aldehydes. Those with p-alkoxy, p-cyano or p-phenyl substituents in the aldehydic ring have a nematic mesophase. U.v. spectra, 1 H and 13C n.m.r. spectra, and mass spectra of the series are discussed. Mass spectra show that ortho-substituents in the aldehydic ring substantially modify the fragmentation
由2-
氨基-
9,10-二氢菲与芳族醛反应制得了13种甲
亚胺。那些具有p -烷氧基,p -
氰基或p在醛环苯基取代基具有的向列型中间相。讨论了Uv光谱,1 H和13 C nmr光谱以及该系列的质谱。质谱表明,醛环中的邻位取代基实质上改变了片段化模式。