GB1479684A

GB1479684A – Process for the preparation of aromatic aldehydes
– Google Patents

GB1479684A – Process for the preparation of aromatic aldehydes
– Google Patents
Process for the preparation of aromatic aldehydes

Info

Publication number
GB1479684A

GB1479684A
GB32195/74A
GB3219574A
GB1479684A
GB 1479684 A
GB1479684 A
GB 1479684A
GB 32195/74 A
GB32195/74 A
GB 32195/74A
GB 3219574 A
GB3219574 A
GB 3219574A
GB 1479684 A
GB1479684 A
GB 1479684A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
amides
ring
preparation
group
Prior art date
1973-07-20
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB32195/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Rhone Poulenc SA

Original Assignee
Rhone Poulenc SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1973-07-20
Filing date
1974-07-19
Publication date
1977-07-13

1974-07-19
Application filed by Rhone Poulenc SA
filed
Critical
Rhone Poulenc SA

1977-07-13
Publication of GB1479684A
publication
Critical
patent/GB1479684A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

C—CHEMISTRY; METALLURGY

C07—ORGANIC CHEMISTRY

C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS

C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds

C07C45/41—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrogenolysis or reduction of carboxylic groups or functional derivatives thereof

Abstract

1479684 Preparation of aromatic aldehydes RHONE-POULENC SA 19 July 1974 [20 July 1973] 32195/74 Heading C2C A process for the preparation of a juxtanuclear or extranuclear aromatic aldehyde comprises effecting the catalytic reduction of the corresponding acid chloride using hydrogen in the presence of a palladium catalyst and 10-5 to 10-1 mols per mol of acid chloride of a tertiary amide derived from a carboxylic acid. Suitable tertiary amides are linear or branched amides or cycloaliphatic amides. The preferred amides are those of the formula in which R1 and R2 each independently represent a straight or branched saturated aliphatic group with at most 6 carbon atoms, a cycloaliphatic group with 5 or 6 carbon atoms in the ring, a phenyl group or a phenylalkyl or alkylphenyl group in which the alkyl portion contains at most 4 carbon atoms, or R1 and R2 together form a saturated or unsaturated divalent radical such that the ring which they form together with the nitrogen atom to which they are attached contains 4 or 5 carbon atoms, and R is as defined for R1 and R2 when taken separately, or represents a hydrogen atom, or R, together with one of the radicals R1 or R2 forms a divalent radical such that the ring which they form together with the -CO-N- grouping contains 4 to 6 carbon atoms.

GB32195/74A
1973-07-20
1974-07-19
Process for the preparation of aromatic aldehydes

Expired

GB1479684A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

FR7326713A

FR2237871B1
(en)

1973-07-20
1973-07-20

Publications (1)

Publication Number
Publication Date

GB1479684A
true

GB1479684A
(en)

1977-07-13

Family
ID=9122916
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB32195/74A
Expired

GB1479684A
(en)

1973-07-20
1974-07-19
Process for the preparation of aromatic aldehydes

Country Status (11)

Country
Link

US
(1)

US4111998A
(en)

JP
(1)

JPS5927328B2
(en)

BE
(1)

BE817890A
(en)

BR
(1)

BR7405876D0
(en)

CH
(1)

CH592036A5
(en)

DE
(1)

DE2434534C2
(en)

FR
(1)

FR2237871B1
(en)

GB
(1)

GB1479684A
(en)

IT
(1)

IT1017309B
(en)

LU
(1)

LU70574A1
(en)

NL
(1)

NL7409474A
(en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS6353931U
(en)

*

1986-09-27
1988-04-11

JPH0381452U
(en)

*

1989-12-11
1991-08-20

US5124487A
(en)

*

1991-08-05
1992-06-23
Occidental Chemical Corporation
Catalytic reduction of nitriles to aldehydes

US20030125583A1
(en)

*

2000-09-25
2003-07-03
Kathe Baumann
Process for preparing fluorine-containing benzaldehydes

EP3175841B1
(en)

2014-07-28
2019-05-08
Shiseido Company, Ltd.
Oily cosmetic

EP3109226A1
(en)

*

2015-06-25
2016-12-28
Basf Se
Process for preparing vanillin

Family Cites Families (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3517066A
(en)

*

1968-03-22
1970-06-23
Hoffmann La Roche
Rosenmund process

1973

1973-07-20
FR
FR7326713A
patent/FR2237871B1/fr
not_active
Expired

1974

1974-07-12
NL
NL7409474A
patent/NL7409474A/en
not_active
Application Discontinuation

1974-07-17
BR
BR5876/74A
patent/BR7405876D0/en
unknown

1974-07-18
US
US05/489,715
patent/US4111998A/en
not_active
Expired – Lifetime

1974-07-18
DE
DE2434534A
patent/DE2434534C2/en
not_active
Expired

1974-07-18
JP
JP49082703A
patent/JPS5927328B2/en
not_active
Expired

1974-07-19
CH
CH1002374A
patent/CH592036A5/xx
not_active
IP Right Cessation

1974-07-19
GB
GB32195/74A
patent/GB1479684A/en
not_active
Expired

1974-07-19
IT
IT25383/74A
patent/IT1017309B/en
active

1974-07-19
LU
LU70574A
patent/LU70574A1/xx
unknown

1974-07-19
BE
BE146771A
patent/BE817890A/en
not_active
IP Right Cessation

Also Published As

Publication number
Publication date

IT1017309B
(en)

1977-07-20

BR7405876D0
(en)

1975-05-13

FR2237871A1
(en)

1975-02-14

CH592036A5
(en)

1977-10-14

DE2434534C2
(en)

1983-04-28

DE2434534A1
(en)

1975-02-06

JPS5927328B2
(en)

1984-07-05

JPS5041831A
(en)

1975-04-16

US4111998A
(en)

1978-09-05

LU70574A1
(en)

1975-05-21

FR2237871B1
(en)

1976-12-03

NL7409474A
(en)

1975-01-22

BE817890A
(en)

1975-01-20

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Legal Events

Date
Code
Title
Description

1977-11-23
PS
Patent sealed [section 19, patents act 1949]

1987-03-11
PCNP
Patent ceased through non-payment of renewal fee

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