FR2269508A1 - Alpha-haloalkyl carboxylates prepn. - by reaction of an acid, an aldehyde and a group II B metal halide catalyst, in presence of a thionyl halide - Google Patents
Alpha-haloalkyl carboxylates prepn. - by reaction of an acid, an aldehyde and a group II B metal halide catalyst, in presence of a thionyl halideInfo
- Publication number
- FR2269508A1 FR2269508A1 FR7414975A FR7414975A FR2269508A1 FR 2269508 A1 FR2269508 A1 FR 2269508A1 FR 7414975 A FR7414975 A FR 7414975A FR 7414975 A FR7414975 A FR 7414975A FR 2269508 A1 FR2269508 A1 FR 2269508A1
- Authority
- FR
- France
- Prior art keywords
- aldehyde
- reaction
- acid
- prepn
- alpha
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Haloalkyl carboxylic esters of formula (I) (where X is halogen; R and R1 are H alkyl alkenyl, alkynyl, aryl, cycloalkyl, aralkyl or heterocyclic gp. opt. substd. by gps. such as halo, alkoxycarbonyl, ketone, t-amid, aldehyde, nitrile, -NO, -NO2, sulphone thio-ether or CF3) are prepd. by reaction of an aldehyde R1.CHO in presence of a metallic halide of gp.IIB as catalyst, in which the reaction of the aldehyde is reacted with the acid R.CO2H in presence of an excess of thionyl halide. Carboxylic acids may be used as starting matl. instead of acid chlorides as in known processes. The prods. are intermediates in the synthesis of drugs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7414975A FR2269508A1 (en) | 1974-04-30 | 1974-04-30 | Alpha-haloalkyl carboxylates prepn. - by reaction of an acid, an aldehyde and a group II B metal halide catalyst, in presence of a thionyl halide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7414975A FR2269508A1 (en) | 1974-04-30 | 1974-04-30 | Alpha-haloalkyl carboxylates prepn. - by reaction of an acid, an aldehyde and a group II B metal halide catalyst, in presence of a thionyl halide |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2269508A1 true FR2269508A1 (en) | 1975-11-28 |
FR2269508B1 FR2269508B1 (en) | 1977-03-04 |
Family
ID=9138304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7414975A Granted FR2269508A1 (en) | 1974-04-30 | 1974-04-30 | Alpha-haloalkyl carboxylates prepn. - by reaction of an acid, an aldehyde and a group II B metal halide catalyst, in presence of a thionyl halide |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2269508A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143601A2 (en) * | 1983-11-25 | 1985-06-05 | Takeda Chemical Industries, Ltd. | Method for producing 1-iodoalkyl acylates |
EP0504107A2 (en) * | 1991-03-11 | 1992-09-16 | Säurefabrik Schweizerhall | Process for the preparation of chlorinated esters of carboxylic acids |
EP0508943A1 (en) * | 1991-03-11 | 1992-10-14 | Säurefabrik Schweizerhall | Process for the preparation of halogenated esters of carboxylic acids |
FR2703046A1 (en) * | 1993-03-26 | 1994-09-30 | Poudres & Explosifs Ste Nale | Process for the preparation of alpha -monohalogenated haloglyoxalates and oxalates and new alpha -monohalogenated haloglyoxalates and oxalates |
-
1974
- 1974-04-30 FR FR7414975A patent/FR2269508A1/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143601A2 (en) * | 1983-11-25 | 1985-06-05 | Takeda Chemical Industries, Ltd. | Method for producing 1-iodoalkyl acylates |
EP0143601A3 (en) * | 1983-11-25 | 1986-10-08 | Takeda Chemical Industries, Ltd. | Method for producing 1-iodoalkyl acylates |
EP0504107A2 (en) * | 1991-03-11 | 1992-09-16 | Säurefabrik Schweizerhall | Process for the preparation of chlorinated esters of carboxylic acids |
EP0504107A3 (en) * | 1991-03-11 | 1992-09-30 | Saeurefabrik Schweizerhall | Process for the preparation of halogenated esters of carboxylic acids |
EP0508943A1 (en) * | 1991-03-11 | 1992-10-14 | Säurefabrik Schweizerhall | Process for the preparation of halogenated esters of carboxylic acids |
US5171879A (en) * | 1991-03-11 | 1992-12-15 | Saurefabrik Schweizerhall | Process for the preparation of chlorinated carboxylic acid esters |
US5175348A (en) * | 1991-03-11 | 1992-12-29 | Saurefabrik Schweizerhall | Process for the preparation of halogenated carboxylic acid esters |
FR2703046A1 (en) * | 1993-03-26 | 1994-09-30 | Poudres & Explosifs Ste Nale | Process for the preparation of alpha -monohalogenated haloglyoxalates and oxalates and new alpha -monohalogenated haloglyoxalates and oxalates |
Also Published As
Publication number | Publication date |
---|---|
FR2269508B1 (en) | 1977-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |