BR0013925A - Preparation process of acid chlorides and benzene aldehydes - Google Patents
Preparation process of acid chlorides and benzene aldehydesInfo
- Publication number
- BR0013925A BR0013925A BR0013925-4A BR0013925A BR0013925A BR 0013925 A BR0013925 A BR 0013925A BR 0013925 A BR0013925 A BR 0013925A BR 0013925 A BR0013925 A BR 0013925A
- Authority
- BR
- Brazil
- Prior art keywords
- benzene
- pressure
- aldehydes
- reactor
- temperature
- Prior art date
Links
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
- C07C45/42—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis
- C07C45/43—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis of >CX2 groups, X being halogen
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
"PROCESSO DE PREPARAçãO DE CLORETOS DE áCIDOS E DE ALDEìDOS BENZêNICOS". A invenção se refere a um processo semi-contínuo para a preparação de cloretos de ácidos e de aldeidos benzênicos que consiste em se produzir em um reator um iniciador compreendendo principalmente um composto benzênico diclorometilado, em se efetuar simultânea e continuamente por um lado uma introdução simultânea no reator de um ácido carboxilico ou de seu anidrido, de um composto benzênico dicloro-metilado (2) e de pelo menos um catalisador do tipo Friedel e Cfafts e em se faze-los reagir, com agitação, a uma pressão P1 inferior à pressão atmosférica ou no máximo igual a ela, e a uma temperatura que varia de 60<198>C a 180<198>C; por outro lado em se extrair continuamente o cloreto do ácido (3) do meio de reação e eventualmente o HC1 formado por destilação a uma pressão P1 e à temperatura de reação, e em seguida em se interromper a introdução dos reagentes quando tiver sido atingido no máximo o volume útil do reator contendo predominantemente o aldeído benzênico; e em se efetuar a destilação fracionada, total ou parcial do meio de reação, constituído predominantemente por aldeído benzênico a uma pressão P2<P1 e a uma temperatura no máximo igual a 180<198>C."PROCESS OF PREPARING CHLORIDES FROM ACIDS AND BENZENIC ALDEHYDES". The invention relates to a semi-continuous process for the preparation of acid chlorides and benzene aldehydes which consists of producing a initiator in a reactor mainly comprising a dichloromethylated benzene compound, of simultaneously and continuously making a simultaneous introduction in the reactor of a carboxylic acid or its anhydride, of a dichloro-methylated benzene compound (2) and at least one catalyst of the type Friedel and Cfafts and in making them react, with agitation, at a pressure P1 below the pressure atmospheric or at most equal to it, and at a temperature ranging from 60 <198> C to 180 <198> C; on the other hand, in continuously extracting the acid chloride (3) from the reaction medium and eventually the HCl formed by distillation at a pressure P1 and at the reaction temperature, and then interrupting the introduction of the reagents when it has been reached in the maximum the useful volume of the reactor containing predominantly benzene aldehyde; and to carry out fractional, total or partial distillation of the reaction medium, predominantly constituted by benzene aldehyde at a pressure P2 <P1 and a temperature of at most 180 <198> C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9911354A FR2798380B1 (en) | 1999-09-10 | 1999-09-10 | PROCESS FOR THE PREPARATION OF ACID CHLORIDES AND BENZENIC ALDEHYDES |
PCT/FR2000/002467 WO2001019766A1 (en) | 1999-09-10 | 2000-09-07 | Method for preparing acid chlorides and benzene aldehydes |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0013925A true BR0013925A (en) | 2002-05-14 |
Family
ID=9549727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0013925-4A BR0013925A (en) | 1999-09-10 | 2000-09-07 | Preparation process of acid chlorides and benzene aldehydes |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1210310A1 (en) |
JP (1) | JP2003509391A (en) |
KR (1) | KR20020041428A (en) |
AU (1) | AU7299700A (en) |
BR (1) | BR0013925A (en) |
FR (1) | FR2798380B1 (en) |
WO (1) | WO2001019766A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1921767A (en) * | 1929-05-20 | 1933-08-08 | Dow Chemical Co | Method of making acid halides |
NL301063A (en) * | 1961-01-30 | |||
US3691217A (en) * | 1970-03-16 | 1972-09-12 | Argus Chem | Process for the preparation of acyl chlorides and benzaldehydes |
FR2772755B1 (en) * | 1997-12-23 | 2000-04-28 | Atochem Elf Sa | CONTINUOUS PROCESS FOR THE PREPARATION OF PIVALOYL CHLORIDE AND AROYL CHLORIDE |
-
1999
- 1999-09-10 FR FR9911354A patent/FR2798380B1/en not_active Expired - Fee Related
-
2000
- 2000-09-07 AU AU72997/00A patent/AU7299700A/en not_active Abandoned
- 2000-09-07 WO PCT/FR2000/002467 patent/WO2001019766A1/en not_active Application Discontinuation
- 2000-09-07 BR BR0013925-4A patent/BR0013925A/en not_active Application Discontinuation
- 2000-09-07 EP EP00960819A patent/EP1210310A1/en not_active Withdrawn
- 2000-09-07 KR KR1020027003121A patent/KR20020041428A/en not_active Application Discontinuation
- 2000-09-07 JP JP2001523347A patent/JP2003509391A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2798380B1 (en) | 2001-10-26 |
JP2003509391A (en) | 2003-03-11 |
EP1210310A1 (en) | 2002-06-05 |
FR2798380A1 (en) | 2001-03-16 |
WO2001019766A1 (en) | 2001-03-22 |
AU7299700A (en) | 2001-04-17 |
KR20020041428A (en) | 2002-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
B11Y | Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired |