Title:
PRODUCTION OF 2,3,6,7,10,11-HEXAALKOXYTRIPHENYLENES
Document Type and Number:
Japanese Patent JP3903291
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To industrially and readily obtain hexaalkoxytriphenylenes useful as a raw material for discotic liquid crystals, etc., in high yield and high purity using an inexpensive and recoverable solvent by reacting a specific 1,2- dialkoxybenzene with a ferric halide in an organic solvent.
SOLUTION: (B) A compound of formula I (R1 and R2 are each 1-10C saturated hydrocarbon group or R1 and R2 may mutually be bonded through a methylene chain or a hetero atom to form a ring) is reacted with (C) a ferric halide in an organic solvent such as a halogenated hydrocarbon (e. g. methylene chloride or chloroform) or an aromatic hydrocarbon (e.g. benzene or toluene) to provide the objective compound of formula II.
Inventors:
Koji Mori
Mitsuo Akada
Yuji Hama
Mitsuo Akada
Yuji Hama
Application Number:
JP19747695A
Publication Date:
April 11, 2007
Filing Date:
August 02, 1995
Export Citation:
Assignee:
Otsuka Chemical Holdings Co., Ltd.
International Classes:
C07C43/20; C07D493/14; C07C41/30; (IPC1-7): C07C43/20; C07C41/30; C07D493/14
Foreign References:
| WO1994029243A1 | ||||
| DE4340749A1 |
Other References:
N.BODEN, et al. ,The synthesis of triphenylene-based discotic mesogens New and improved routes,LIQUID CRYSTALS,1993年,Vol.15, No.6,p.851-858
Attorney, Agent or Firm:
Eiji Saegusa
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate