公开(公告)号：KR1020070056470A

公开(公告)日：2007-06-04

申请号：KR1020050115139

申请日：2005-11-29

Applicant: 재단법인서울대학교산학협력재단

Inventor： 김영규 ,  김병현 ,  이종길 ,  임태은

IPC: C07C4/24

CPC classification number: C07C15/24 ,  C07C49/213 ,  C07C2527/08 ,  C07C2527/128 ,  C07C2527/135 ,  C07C2531/08 ,  C07C2531/10 ,  Y02P20/55

Abstract: 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.

Abstract translation: 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。

公开(公告)号：KR101140202B1

公开(公告)日：2012-05-02

申请号：KR1020050115139

申请日：2005-11-29

Applicant: 재단법인서울대학교산학협력재단

Inventor： 김영규 ,  김병현 ,  이종길 ,  임태은

IPC: C07C4/24

CPC classification number: C07C15/24 ,  C07C49/213 ,  C07C2527/08 ,  C07C2527/128 ,  C07C2527/135 ,  C07C2531/08 ,  C07C2531/10 ,  Y02P20/55

Abstract: The present invention relates to a novel method for preparing 2,6-dialkylnaphthalene with high selectivity and high yield using entirely novel starting materials through alkylation and cyclodehydration without necessitating separation or purification of isomers, which has been a problem of the conventional method, and particularly to a method comprising the steps of (a) preparing an intermediate by alkylating an aromatic compound with an alkene compound in an equivalent ratio in the presence of a catalyst and (b) preparing 2,6-dialkylnaphthalene through cyclodehydration of the intermediate.