公开(公告)号：JPH0585994A

公开(公告)日：1993-04-06

申请号：JP25164491

申请日：1991-09-30

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KUWABARA MASAHIRO ,  KONDO MASAHIRO ,  OOMATSUZAWA TAKESHI ,  TANAKA MICHIO

IPC: C07D295/08 ,  C07C213/02 ,  C07C215/76

Abstract: PURPOSE:To obtain the subject compounds in good yield without using any solvent and catalyst and facilitate purification of the subject compounds by adding a secondary amine to a dihydric phenol, then heating the reactional mixture to a specific temperature and keeping the reactional mixture for a prescribed time. CONSTITUTION:Secondary amines (e.g. dimethylamine or pyrrolidine) expressed formula II or III (R is methyl or ethyl; n is 4 or 5) in an equiv. amount of 0.8-2 times, preferably 1-1.5 times based on dihydric phenols (preferably resorcinol, hydroquinone, etc.) expressed by formula I are initially added thereto. The temperature of the reactional mixture after adding the secondary amines is increased to 150-250 deg.C, preferably 170-230 deg.C and the reaction mixture is further kept at the temperature for 1-10hr, preferably 3-8hr to afford the objective compounds expressed by formula IV or V.

公开(公告)号：JPH0585963A

公开(公告)日：1993-04-06

申请号：JP31758291

申请日：1991-09-24

Applicant: MITSUI PETROCHEMICAL IND

Inventor： FUJITA TERUNORI ,  KANEDA MITSUHIRO ,  OOMATSUZAWA TAKESHI ,  TAKAHATA KAZUNORI

IPC: B01J29/18 ,  C07B61/00 ,  C07C6/12 ,  C07C15/24

Abstract: PURPOSE:To produce 2,6-diethylnaphthalene on an industrial scale at a low cost in high yield by using mordenite as a catalyst and carrying out trans- ethylation using ethylnaphthalene as an ethylation agent as it is. CONSTITUTION:2,6-Diethylnaphthalene is produced by the transethylation of ethylnaphthalene (preferably 1- or 2-ethylnaphthalene) (preferably in liquid phase) using mordenite as a catalyst. The amount of mordenite is 0.001-500wt.% (preferably 0.05-200wt.%) based on ethylnaphthalene and the reaction temperature is 100-450 deg.C (preferably 130-300 deg.C).

公开(公告)号：JPH0585962A

公开(公告)日：1993-04-06

申请号：JP31758191

申请日：1991-09-24

Applicant: MITSUI PETROCHEMICAL IND

Inventor： FUJITA TERUNORI ,  OOMATSUZAWA TAKESHI ,  KANEDA MITSUHIRO ,  TAKAHATA KAZUNORI

IPC: B01J29/08 ,  C07B61/00 ,  C07C5/27 ,  C07C15/24

Abstract: PURPOSE:To obtain the subject compound useful as a raw material for polymer and production raw material for pharmaceuticals and agricultural chemicals in high yield by using a specific faujasite-type zeolite as a catalyst and isomerizing a mixed dialkylnaphthalene in high efficiency. CONSTITUTION:A 2,6-dialkylnaphthalene is produced by isomerizing a dialkylnaphthalene of formula (Naph is naphthalene ring; R is methyl or ethyl; R is ethyl or isopropyl) by using a catalyst consisting of a proton-containing faujasite-type zeolite or a faujasite-type zeolite produced by substituting a part of the proton with alkali metal ion or alkaline-earth metal ion (especially preferably Y-type faujasite-type zeolite, particularly super-stable Y-type faujasite-type zeolite). The catalyst is e.g. protonic super-stable Y-type zeolite or proton- barium-type super-stable Y-type zeolite).