2-(beta-substituted ethyl)-5-substituted pyridine

Abstract

Abstract NEW MATERIAL:A compound expressed by formula I (R and R' are 1-15C alkyl and alkoxyl; X is phenylene, biphenylene or expressed by formulas V-VIII). EXAMPLE:2-[beta-(4-Propyloxyphenyl)ethyl]-5-pentyloxypyridine. USE:A component which is a liquid crystal substance for liquid crystal compositions, having improved compatibility with another liquid crystal compound, and capable of reducing the driving voltage of liquid crystal display elements by the compositions prepared from a mixture thereof. PREPARATION:A 3-substituted-6-methylpyridine expressed by formula II is reacted with a 4-substituted benzaldehyde or trans-4-substituted cyclohexylaldehyde expressed by formula III in a solution of LiN (i-propyl)2 in tetrahydrofuran to form a compound expressed by formula IV, which is then dehydrated with KHSO4 and catalytically reduced with H2 in the presence of Pd/C catalyst to afford the aimed compound expressed by formula I .

Inventors

• 👤 Shigeru Sugimori
• 👤 滋 杉森
• 👤 Kazunori Nigorikawa
• 👤 和則 濁川
• 👤 Yasuyuki Goto
• 👤 泰行 後藤

Bibliographic Details