Title:
選択的脱ベンジル化方法およびこれに用いる選択水素化触媒
Document Type and Number:
Japanese Patent JP5785045
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a debenzylation technology of efficiently hydrogenating a benzyl group as a protective group without decomposing or hydrogenating a halogen atom and an acyl group in an aromatic halide compound or an aromatic ketone compound.SOLUTION: In a debenzylation method, a hydrogen gas is reacted, in an ester medium, with a carboxylic acid benzyl ester represented by formula (I) in the presence of a β zeolite carrying a palladium ingredient, and a carboxylic acid compound represented by formula (II) is obtained. In the formula: Ar is an aromatic ring group or a heterocyclic group having one or substituents which can be hydrogenated; Zis a single bond, -CHCH- or -CH=CH-; Zis a single bond or -CHCH-; and Bn is a benzyl group.
Inventors:
Hironao Sajiki
Yasuya Kadoguchi
Yoshinari Sawama
Toru Takahashi
Ryo Ito
Yasuya Kadoguchi
Yoshinari Sawama
Toru Takahashi
Ryo Ito
Application Number:
JP2011221848A
Publication Date:
September 24, 2015
Filing Date:
October 06, 2011
Export Citation:
Assignee:
NE Chemcat Co., Ltd.
International Classes:
C07C51/09; B01J29/74; C07C57/58; C07C63/70; C07C65/32
Domestic Patent References:
| JP7155612A | ||||
| JP2008525372A | ||||
| JP9013049A | ||||
| JP56046850A | ||||
| JP1110651A | ||||
| JP63201156A | ||||
| JP2010521435A | ||||
| JP7010803A | ||||
| JP2004261751A | ||||
| JP2001149758A | ||||
| JP9511686A | ||||
| JP2000300994A |
Foreign References:
| WO2006028146A1 |
Other References:
TANG,T. et al,Good sulfur tolerance of a mesoporous Beta zeolite-supported palladium catalyst in the deep hydrogenation of aromatics,Journal of Catalysis,2008年,Vol.257, No.1,p.125-133
PROCHAZKOVA,D. et al,Hydrodeoxygenation of aldehydes catalyzed by supported palladium catalysts,Applied Catalysis, A: General,2007年,Vol.332, No.1,p.56-64
PROCHAZKOVA,D. et al,Hydrodeoxygenation of aldehydes catalyzed by supported palladium catalysts,Applied Catalysis, A: General,2007年,Vol.332, No.1,p.56-64
Attorney, Agent or Firm:
Ono International Patent Office