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
    • 22. 发明公开
    • 2,6-디알킬나프탈렌의 새로운 제조 방법
    • 制备2,6-二羟基苯乙烯的新方法
    • KR1020070056470A
    • 2007-06-04
    • KR1020050115139
    • 2005-11-29
    • 재단법인서울대학교산학협력재단
    • 김영규김병현이종길임태은
    • C07C4/24
    • C07C15/24C07C49/213C07C2527/08C07C2527/128C07C2527/135C07C2531/08C07C2531/10Y02P20/55
    • Provided is a method for preparing a 2,6-dialkyl naphthalene without the separation of isomers by using the starting material inhibiting the generation of isomers. The method comprises the steps of reacting an aromatic compound represented by a formula I with an alkene compound represented by a formula II by alkylation in the presence of a catalyst to prepare an intermediate; and dehydrating the intermediate by cyclodehydration to prepare a 2,6-dialkyl naphthalene represented by the formula IV, wherein R1 is a C1-C10 linear, branched or cyclic alkyl group; R2 is a C1-C10 linear, branched or cyclic alkyl group; R3 is O-Y, -N-Y2 or -S-Y; R4 is O, N-Y or S; Y is H, or a hetero atom protecting group capable of acting as a leaving group such as an alkyl, arylmethyl, alkylsilyl, alkoxycarbonyl, acryl, arylsulfonyl, alkylsulfonyl or dialkylphosphonyl group; X is a halogen atom or O-Z; and Z is H, or a hetero atom protecting group capable of acting as a leaving group such as an arylsulfonyl, alkylsulfonyl, perfluoroalkylsulfonyl or dialkylphosphonyl group.
    • 提供了通过使用抑制异构体产生的起始物质来制备2,6-二烷基萘而不分离异构体的方法。 该方法包括以下步骤:在催化剂存在下使式I表示的芳族化合物与由式II表示的烯烃化合物反应以制备中间体; 并通过环化脱水使中间体脱水以制备式IV表示的2,6-二烷基萘,其中R1是C1-C10直链,支链或环状的烷基; R2是C1-C10直链,支链或环状的烷基; R3是O-Y,-N-Y2或-S-Y; R4是O,N-Y或S; Y是H或可以作为离去基团的烷基,芳基甲基,烷基甲硅烷基,烷氧基羰基,丙烯酰基,芳基磺酰基,烷基磺酰基或二烷基膦酰基的杂原子保护基; X是卤素原子或O-Z; Z为H,或能够作为离去基团的芳基磺酰基,烷基磺酰基,全氟烷基磺酰基或二烷基膦酰基的杂原子保护基。