会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 171. 发明专利
    • PRODUCTION OF 2-AMINOBENZYL ALCOHOL DERIVATIVE
    • JPH02264748A
    • 1990-10-29
    • JP8609389
    • 1989-04-05
    • NIPPON CHEMIPHAR CO
    • MAZAKI MITSUOYAMAKAWA TOMIOOKAZOE TAKASHI
    • C07D233/84C07C213/02C07C215/68C07C217/84C07D265/16
    • PURPOSE:To industrially and advantageously obtain the subject compound useful as an intermediate for medicines, agricultural chemicals, etc., by subjecting a 2-aminobanzyl alcohol corresponding to the objective compound and an aliphatic aldehyde to dehydrating reaction, then reducing the resultant compound or further subjecting the reduction product to N-alkylation. CONSTITUTION:A compound expressed by formula I (R is H, halogen, alkyl, alkoxy, CF3, OCF3 or NO2; n is 1, 2 or 3) and a 2-8C aliphatic aldehyde are subjected to dehydrating reaction in a suitable solvent at a temperature of 0 deg.C to the boiling point of the solvent, preferably 0-40 deg.C and the resultant reaction product is then reduced by a well-known method, such as hydrogenation in the presence of a catalyst, e.g. palladium-carbon, or reduction with a metal hydride, such as boron hydride or metal boron hydride, to provide a compound expressed by formula II (R is 1-7C alkyl), which, as desired, is further subjected to N-alkylation by a well-known method to more safely afford the objective compound expressed by formula II or formula III (R is alkyl) in high yield according to the method suitable for industrial mass production.