GB1503408A – Process for the preparation of geminal dihalides
– Google Patents
GB1503408A – Process for the preparation of geminal dihalides
– Google Patents
Process for the preparation of geminal dihalides
Info
Publication number
GB1503408A
GB1503408A
GB22974/76A
GB2297476A
GB1503408A
GB 1503408 A
GB1503408 A
GB 1503408A
GB 22974/76 A
GB22974/76 A
GB 22974/76A
GB 2297476 A
GB2297476 A
GB 2297476A
GB 1503408 A
GB1503408 A
GB 1503408A
Authority
GB
United Kingdom
Prior art keywords
organyl
ketones
triorganylphosphines
geminal
triorganyl
Prior art date
1975-06-07
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
GB22974/76A
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.)
Bayer AG
Original Assignee
Bayer AG
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.)
1975-06-07
Filing date
1976-06-03
Publication date
1978-03-08
1975-06-07
Priority claimed from DE2525442A
external-priority
patent/DE2525442C3/en
1975-07-30
Priority claimed from DE19752533988
external-priority
patent/DE2533988A1/en
1976-06-03
Application filed by Bayer AG
filed
Critical
Bayer AG
1978-03-08
Publication of GB1503408A
publication
Critical
patent/GB1503408A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
C07B39/00—Halogenation
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C17/00—Preparation of halogenated hydrocarbons
C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
C07C17/18—Preparation of halogenated hydrocarbons by replacement by halogens of oxygen atoms of carbonyl groups
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
C07C201/06—Preparation of nitro compounds
C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C253/00—Preparation of carboxylic acid nitriles
C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
C07C37/18—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by condensation involving halogen atoms of halogenated compounds
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
C07C51/58—Preparation of carboxylic acid halides
C07C51/60—Preparation of carboxylic acid halides by conversion of carboxylic acids or their anhydrides or esters, lactones, salts into halides with the same carboxylic acid part
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C2603/00—Systems containing at least three condensed rings
C07C2603/02—Ortho- or ortho- and peri-condensed systems
C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
C07C2603/06—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members
C07C2603/10—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members containing five-membered rings
C07C2603/12—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members containing five-membered rings only one five-membered ring
C07C2603/18—Fluorenes; Hydrogenated fluorenes
Abstract
1503408 Preparation of geminal dihalides BAYER AG 3 June 1976 [7 June 1975 30 July 1975] 22974/76 Heading C2C A geminal dichloride is obtained by reacting phosgene or thionyl chloride with a non- enolizable aldehyde and/or ketone in the presence of an organyl-phosphorus compound of 3- and/or 5-valent P, or in the presence of an N,N-dialkyl-substituted carboxylic acid amide. Specified types or organyl-phosphorus compounds are triorganyl phosphines, diorganylhalosphosphines, triorganyl phosphonium salts, triorganylphosphorus betaines, triorganylphosphinealkylenes, 1,1 – dihalo – triorganylphosphines, 1 – halo – 1 – acyl – triorganylphosphines, 1 – halo – 1 – hydroxy – triorganylphosphines, tri-organyl-phosphine oxides and tri-organyl-phosphine sulphides. The N,N-disubstituted carboxylic amides may be openchain or cyclic compounds. Specified types of aldehydes and ketones for use as starting materials are aliphatic and aromatic aldehydes and ketones, cycloaliphatic ketones, alkylaryl and diaryl ketones as well as diaryl α-diketones. The reaction may be carried out in the presence or absence of solvents. 1,4 – Bis – (4
GB22974/76A
1975-06-07
1976-06-03
Process for the preparation of geminal dihalides
Expired
GB1503408A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
DE2525442A
DE2525442C3
(en)
1975-06-07
1975-06-07
Process for the preparation of geminal dihalides
DE19752533988
DE2533988A1
(en)
1975-07-30
1975-07-30
Geminal dichlorides from aldehydes and ketones – by reaction with phosgene or thionyl chloride using a catalyst
Publications (1)
Publication Number
Publication Date
GB1503408A
true
GB1503408A
(en)
1978-03-08
Family
ID=25769002
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB22974/76A
Expired
GB1503408A
(en)
1975-06-07
1976-06-03
Process for the preparation of geminal dihalides
Country Status (4)
Country
Link
JP
(1)
JPS51149201A
(en)
FR
(1)
FR2348174A1
(en)
GB
(1)
GB1503408A
(en)
NL
(1)
NL7606092A
(en)
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JP5261169B2
(en)
*
2008-12-26
2013-08-14
ユアン シン マテリアルズ テクノロジー コーポレイション
Process for producing 1,4-bis (dichloromethyl) tetrafluorobenzene
CN108863736A
(en)
*
2018-07-27
2018-11-23
福州大学
A kind of preparation method of the aromatic carboxylic acids of carbonyl functionalization
1976
1976-06-03
GB
GB22974/76A
patent/GB1503408A/en
not_active
Expired
1976-06-04
NL
NL7606092A
patent/NL7606092A/en
not_active
Application Discontinuation
1976-06-04
JP
JP51064706A
patent/JPS51149201A/en
active
Pending
1976-06-04
FR
FR7617118A
patent/FR2348174A1/en
not_active
Withdrawn
Also Published As
Publication number
Publication date
JPS51149201A
(en)
1976-12-22
NL7606092A
(en)
1976-12-09
FR2348174A1
(en)
1977-11-10
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Legal Events
Date
Code
Title
Description
1978-07-19
PS
Patent sealed
1981-02-04
PCNP
Patent ceased through non-payment of renewal fee
