ES390333A1 - Production of catechol compounds - Google Patents
Production of catechol compoundsInfo
- Publication number
- ES390333A1 ES390333A1 ES390333A ES390333A ES390333A1 ES 390333 A1 ES390333 A1 ES 390333A1 ES 390333 A ES390333 A ES 390333A ES 390333 A ES390333 A ES 390333A ES 390333 A1 ES390333 A1 ES 390333A1
- Authority
- ES
- Spain
- Prior art keywords
- hydroxide
- alkali metal
- excess
- melt
- reaction temperature
- 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.)
- Expired
Links
- 150000005206 1,2-dihydroxybenzenes Chemical class 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract 2
- 150000001340 alkali metals Chemical class 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 150000002989 phenols Chemical class 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229910052712 strontium Inorganic materials 0.000 abstract 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
- C07C37/02—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis by substitution of halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for producing divalent phenols, especially pyrocatechin, by melting orthochlorophenol with the hydroxide of an alkali metal in the presence of catalysts with a content of copper, silver or strontium, at a temperature between 160 and 300ºC under pressure and in the presence of melt water, characterized in that the reaction temperature of the melt is maintained in the range between 220 and 250ºC, the evaporated water being returned in the form of condensate, in an amount such that a constant concentration of the hydroxide of alkali metal that corresponds to the necessary reaction temperature, and because the excess of evaporated water evacuates the excess reaction heat in the form of evaporation heat. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS271870 | 1970-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES390333A1 true ES390333A1 (en) | 1973-06-01 |
Family
ID=5365062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES390333A Expired ES390333A1 (en) | 1970-04-22 | 1971-04-19 | Production of catechol compounds |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT308721B (en) |
| BE (1) | BE765949A (en) |
| CH (1) | CH564499A5 (en) |
| DE (1) | DE2119676A1 (en) |
| ES (1) | ES390333A1 (en) |
| FR (1) | FR2089964A5 (en) |
| GB (1) | GB1344095A (en) |
| NL (1) | NL7105311A (en) |
-
1971
- 1971-04-19 BE BE765949A patent/BE765949A/en unknown
- 1971-04-19 GB GB996071A patent/GB1344095A/en not_active Expired
- 1971-04-19 ES ES390333A patent/ES390333A1/en not_active Expired
- 1971-04-20 NL NL7105311A patent/NL7105311A/xx unknown
- 1971-04-21 FR FR7114073A patent/FR2089964A5/fr not_active Expired
- 1971-04-21 CH CH583071A patent/CH564499A5/xx not_active IP Right Cessation
- 1971-04-22 AT AT347771A patent/AT308721B/en not_active IP Right Cessation
- 1971-04-22 DE DE19712119676 patent/DE2119676A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE765949A (en) | 1971-09-16 |
| CH564499A5 (en) | 1975-07-31 |
| AT308721B (en) | 1973-07-25 |
| DE2119676A1 (en) | 1971-11-04 |
| GB1344095A (en) | 1974-01-16 |
| NL7105311A (en) | 1971-10-26 |
| FR2089964A5 (en) | 1972-01-07 |
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