Liquid Crystal Materials with Sulfur Atoms Incorporated in the Principal Structure. IV. New Liquid Crystal Compounds; 2-(<i>p</i>-Substituted phenyl)-5-alkyl-1,3-oxathianes
作者:Yuichiro Haramoto、Hiroyoshi Kamogawa
DOI:10.1246/bcsj.58.1821
日期:1985.6
3-oxathianes, new liquid crystal compounds, were synthesized by the acetalformation reaction of the corresponding aldehydes and 2-alkyl-3-mercapto-1-propanols. The mesomorphic behaviors of these 1,3-oxathiane compounds were compared with those of the corresponding 1,3-dithianes and 1,3-dioxanes. Some of 2-(p-cyanophenyl)-5-alkyl-1,3-oxathianes exhibit monotropic nematic liquid crystal phase at room
2-(p-取代苯基)-5-烷基-1,3-氧杂环己烷是一种新型液晶化合物,通过相应的醛和2-烷基-3-巯基-1-丙醇的缩醛化反应合成。将这些 1,3-氧杂噻吩化合物的介晶行为与相应的 1,3-二噻烷和 1,3-二氧杂环己烷的介晶行为进行了比较。一些 2-(对-氰基苯基)-5-烷基-1,3-氧杂环己烷在室温下表现出单向向列液晶相,而 2-(对-烷氧基苯基)-5-烷基-1,3-氧杂杂环杂芳烃几乎不呈现液晶相。这些介晶特征似乎源于 1,3-氧杂环庚烷环处的分子宽度和弯曲。