JPS5557540A - Preparation of monomethyl terephthalate - Google Patents
Preparation of monomethyl terephthalateInfo
- Publication number
- JPS5557540A JPS5557540A JP13127178A JP13127178A JPS5557540A JP S5557540 A JPS5557540 A JP S5557540A JP 13127178 A JP13127178 A JP 13127178A JP 13127178 A JP13127178 A JP 13127178A JP S5557540 A JPS5557540 A JP S5557540A
- Authority
- JP
- Japan
- Prior art keywords
- mole
- methanol
- basis
- caustic alkali
- amount
- 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.)
- Pending
Links
- REIDAMBAPLIATC-UHFFFAOYSA-M 4-methoxycarbonylbenzoate Chemical compound COC(=O)C1=CC=C(C([O-])=O)C=C1 REIDAMBAPLIATC-UHFFFAOYSA-M 0.000 title abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 9
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 abstract 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 3
- 239000003518 caustics Substances 0.000 abstract 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare monomethyl terephthalate in high productivity and in high yield, by reacting dimethyl terephthalate with a caustic alkali at a specific ratio in a specific amount of methanol.
CONSTITUTION: (A) Dimethyl terephthalate is reacted with (B) a caustic alkali (potassium hydroxide, etc.) in (C) methanol, wherein the amount of (A) is 0.015W 0.070, preferably 0.025W0.040 mole on the basis of 1 mole of (C) and the amount of (B) is 0.8W1.5, preferably 0.9W1.3 mole on the basis of 1 mole of (A). The feed of the caustic alkali (B) is 0.0007W0.06, preferably 0.002W0.05mol/hr on the basis of 1 mole of methanol (C) in the reaction system. The product is neutralized to give the desired compound. The method suppresses the formation of undesired terephthalic acid, remarkably increases the productivity per unit volume and gives a high yield.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13127178A JPS5557540A (en) | 1978-10-25 | 1978-10-25 | Preparation of monomethyl terephthalate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13127178A JPS5557540A (en) | 1978-10-25 | 1978-10-25 | Preparation of monomethyl terephthalate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5557540A true JPS5557540A (en) | 1980-04-28 |
Family
ID=15054019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13127178A Pending JPS5557540A (en) | 1978-10-25 | 1978-10-25 | Preparation of monomethyl terephthalate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5557540A (en) |
-
1978
- 1978-10-25 JP JP13127178A patent/JPS5557540A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0388857A3 (en) | Process for production of alkyl glycoside excellent in hue | |
| MY101210A (en) | Process for producing fatty acids from lower alcohol ester of fatty acids. | |
| EP0387912A3 (en) | Process for the production of alkyl glycoside | |
| JPS5557540A (en) | Preparation of monomethyl terephthalate | |
| JPS572242A (en) | Preparation of 2-bromo-2-nitro-1,3-propanediol | |
| JPS5517339A (en) | Preparation of thiourea dioxide | |
| JPS5675462A (en) | Preparation of benzenecarboxylate | |
| JPS55122740A (en) | Preparation of acrylate or methacrylate | |
| JPS5640630A (en) | Production of dimethyl ether | |
| JPS6483042A (en) | Production of alkoxybenzaldehyde | |
| JPS57165341A (en) | Preparation of pivaloyl chloride and benzoyl chloride | |
| JPS56127324A (en) | Preparation of methyl chloride | |
| JPS5770845A (en) | Preparation of methacrylic acid dimenthylaminomethyl ester | |
| US3651130A (en) | Process for the production of acetoacetic acid esters | |
| EP0498630A3 (en) | Synthesis of para-tert-butoxycarbonyloxystyrene | |
| JPS567785A (en) | Preparation of theobromine derivative | |
| JPS5576881A (en) | Preparation of high-purity coproporphyrin 3 alkali salt | |
| JPS5726628A (en) | Preparation of cyclohexadiene | |
| JPS5519241A (en) | Preparation of 4-homotwistane | |
| JPS5758645A (en) | Preparation of carbonate | |
| JPS5427507A (en) | Preparation of tertiary butyl alcohol | |
| JPS6461493A (en) | Production of sialosylceramides | |
| JPS5513216A (en) | Preparation of 1-(5-oxohexyl)-3,7-dimethylxanthine | |
| JPS53105471A (en) | Preparation of cyclic ethers | |
| JPS54148743A (en) | Production of methoclopramide |