AT237604B - Process for the preparation of benzene dicarboxylic acid half-ester chlorides, which may be ring-chlorinated - Google Patents
Process for the preparation of benzene dicarboxylic acid half-ester chlorides, which may be ring-chlorinatedInfo
- Publication number
- AT237604B AT237604B AT807562A AT807562A AT237604B AT 237604 B AT237604 B AT 237604B AT 807562 A AT807562 A AT 807562A AT 807562 A AT807562 A AT 807562A AT 237604 B AT237604 B AT 237604B
- Authority
- AT
- Austria
- Prior art keywords
- chlorinated
- preparation
- ring
- dicarboxylic acid
- benzene dicarboxylic
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N benzene-dicarboxylic acid Natural products OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title description 4
- LWTXRSWGLSFPSU-UHFFFAOYSA-N 2-(trichloromethyl)benzoic acid Chemical class OC(=O)C1=CC=CC=C1C(Cl)(Cl)Cl LWTXRSWGLSFPSU-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims 2
- 229910015900 BF3 Inorganic materials 0.000 claims 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 150000007513 acids Chemical class 0.000 claims 1
- VMPVEPPRYRXYNP-UHFFFAOYSA-I antimony(5+);pentachloride Chemical compound Cl[Sb](Cl)(Cl)(Cl)Cl VMPVEPPRYRXYNP-UHFFFAOYSA-I 0.000 claims 1
- 239000003054 catalyst Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- GPZXFICWCMCQPF-UHFFFAOYSA-N 2-methylbenzoyl chloride Chemical compound CC1=CC=CC=C1C(Cl)=O GPZXFICWCMCQPF-UHFFFAOYSA-N 0.000 description 2
- -1 ester chloride Chemical class 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- LJMNEQZBOODJQR-UHFFFAOYSA-N 2-(trichloromethyl)benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1C(Cl)(Cl)Cl LJMNEQZBOODJQR-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- ZWLPBLYKEWSWPD-UHFFFAOYSA-N o-toluic acid Chemical class CC1=CC=CC=C1C(O)=O ZWLPBLYKEWSWPD-UHFFFAOYSA-N 0.000 description 1
- 150000003138 primary alcohols Chemical class 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von gegebenenfalls kernchlorierten
B enzoldicarb ons äurehalbesterchloriden
In der Patentschrift Nr. 224110 wird ein Verfahren zur Herstellung von Halbesterchloriden von Benzoldicarbonsäuren, insbesondere der Iso- und Terephthalsäure, beschrieben, das dadurch gekennzeichnet ist, dass man die entsprechenden Trichlormethylbenzoesäureester primärer Alkohole, vorzugsweise solcher mit bis zu 5 Kohlenstoffatomen, mit äquimolekularen Mengen der entsprechenden Methylbenzoesäuren in Gegenwart von 0, 01 bis 1 Gel.-% Eisen-III-chlorid unter Erhitzen auf höhere Temperaturen umsetzt, das entstandene Gemisch von Benzoldicarbonsäurehalbesterchlorid und Methylbenzoesäurechlorid durch Destillation trennt,
das erhaltene Methylbenzoesäurechlorid in bekannter Weise in Trichlormethylbenzoylchlorid und weiter in denTrichlormethylbenzoesäureester überführt und diesen in den Prozess zurückführt.
EMI1.1
<Desc / Clms Page number 1>
Process for the production of optionally nuclear chlorinated
B enzoldicarb on acid half-ester chlorides
Patent specification No. 224110 describes a process for the preparation of half-ester chlorides of benzene dicarboxylic acids, in particular iso- and terephthalic acid, which is characterized in that the corresponding trichloromethylbenzoic acid esters of primary alcohols, preferably those with up to 5 carbon atoms, with equimolecular amounts of corresponding methylbenzoic acids in the presence of 0.01 to 1 gel .-% iron (III) chloride with heating to higher temperatures, the resulting mixture of benzene dicarboxylic acid half ester chloride and methylbenzoic acid chloride is separated by distillation,
the methylbenzoic acid chloride obtained is converted in a known manner into trichloromethylbenzoyl chloride and further into the trichloromethylbenzoic acid ester and this is returned to the process.
EMI1.1
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE237604X | 1962-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT237604B true AT237604B (en) | 1964-12-28 |
Family
ID=5903181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT807562A AT237604B (en) | 1962-02-24 | 1962-10-12 | Process for the preparation of benzene dicarboxylic acid half-ester chlorides, which may be ring-chlorinated |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT237604B (en) |
-
1962
- 1962-10-12 AT AT807562A patent/AT237604B/en active
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