Title:
1-フェニルインダン光開始剤の製造方法
Document Type and Number:
Japanese Patent JP4589916
Kind Code:
B2
Abstract:
The invention relates to a process for the preparation of a crystalline isomeric mixture of compounds of formulae (I) and (II) which process comprises the following steps: a) the slow addition of aluminium chloride, in portions, to a solution comprising 1,1,3-trimethyl-3-phenylindan and isobutyric acid halide in a suitable solvent at a reaction temperature of from -20° C. to 20° C., an isomeric mixture consisting of compounds of formulae (Ia) and (IIa) being obtained; b) enol chlorination of compounds (Ia) and (IIa), an isomeric mixture consisting of compounds of formulae (Ib) and (IIb) being obtained; c) hydrolysis of the chlorinated isomeric mixture from step b). The invention relates also to the preparation of the individual compounds (I) and (II).
Inventors:
Hughler, Rinaldo
Horni, thomas
Horni, thomas
Application Number:
JP2006505572A
Publication Date:
December 01, 2010
Filing Date:
April 26, 2004
Export Citation:
Assignee:
Ciba Holding Inc.
International Classes:
C07C45/64; C07C45/46; C07C45/63; C07C45/81; C07C49/792; C07C49/813; C07C49/83; C08F2/50; C07B61/00
Domestic Patent References:
| JP5132508A | ||||
| JP2002121189A | ||||
| JP49350A |
Foreign References:
| US4987159 | ||||
| WO2002085832A1 |
Other References:
OLAH,G.A.,Friedel-crafts and related reactions ,Interscience Publishers,1963年,Volume I,p.298-303
Attorney, Agent or Firm:
Hajime Tsukuni
Fumio Shinoda
Koshiro Tsukuda
Fumio Shinoda
Koshiro Tsukuda