【発明の名称】3―(3,4,5,6―テトラヒドロフタルイミド)―ベンズアルデヒドの製法

Title:

【発明の名称】3―(3,4,5,6―テトラヒドロフタルイミド)―ベンズアルデヒドの製法

Document Type and Number:

Japanese Patent JP2820429

Kind Code:

B2

Abstract:

3-(3,4,5,6-Tetrahydrophthalimido)-benzaldehydes of the type I I or corresponding derivatives substituted in the phenyl ring are prepared by (a) acetalization of a 3-nitrobenzaldehyde III or of a corresponding derivative with an alcohol IV in the presence of an acidic catalyst to give the corresponding cyclic acetal V V (b) reduction of the cyclic acetal V with hydrogen to give the corresponding amino compound II and (c) subsequent condensation of this aminophenyl acetal II with 3,4,5,6-tetrahydrophthalic anhydride in an acidic reaction medium.

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Inventors:

Claus, Fisher
Rotal, Luppe
Peter, Plato

Application Number:

JP10185589A

Publication Date:

November 05, 1998

Filing Date:

April 24, 1989

Export Citation:

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Assignee:

BASF Akchen Gezel Shaft

International Classes:

B01J25/02; B01J27/02; B01J27/06; B01J27/14; B01J31/02; C07B61/00; C07D209/48; C07D317/16; C07D317/28; C07D319/06; C07D321/00; C07D325/00; (IPC1-7): C07D209/48; B01J25/02; B01J27/02; B01J27/06; B01J31/02; C07D317/28; C07D319/06; C07D321/00; C07D325/00

Domestic Patent References:

JP60152465A

Other References:

【文献】国際公開87/7602(WO,A1)

Attorney, Agent or Firm:

Tajiro Taiji

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