GB1227419A - - Google Patents
Info
- Publication number
- GB1227419A GB1227419A GB1227419DA GB1227419A GB 1227419 A GB1227419 A GB 1227419A GB 1227419D A GB1227419D A GB 1227419DA GB 1227419 A GB1227419 A GB 1227419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dialkyl
- butyl
- formula
- alkyl group
- benzene
- 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
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
- C07C37/04—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 SO3H groups or a derivative thereof
-
- 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
-
- 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
- C07C37/48—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by exchange of hydrocarbon groups, which may be substituted, from the same of other compounds, e.g. transalkylation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
1,227,419. Dialkyl phenols. JAPAN GAS CHEMICAL CO. Inc. 16 April, 1968 [14 April, 1967; 21 April, 1967], No. 17848/68. Heading C2C. [Also in Division C5] A process for the production of a 2,6-dialkyl phenol comprises reacting a 2,6-dialkyl-4-talkyi phenol of the Formula I with an aromatic hydrocarbon of the Formula II in the presence of a Friedel-Crafts catalyst at a temperature of from - 20‹ to 100‹ C. to transfer the + -alkyl group to said aromatic hydrocarbon, wherein R 1 denotes a C 4-7 t-alkyl group, R 2 and R 3 each denotes a C 1-4 normal alkyl group and R 4 and R 5 each denotes either hydrogen or a C 1-4 normal alkyl group located mutually in the o- or m-position when neither R 4 nor R 5 is hydrogen. In a preferred embodiment the compound of Formula I is formed from the corresponding 1,3-dialkyl-5-t-alkyl benzene by sulphonation followed by alkali fusion or by chlorination followed by hydrolysis, and is then reacted with a 1,3-dialkyl benzene having the formula wherein R 2 and R 3 are as defined above in the presence of a Friedel-Crafts catalyst at a temperature of -20‹ to 100‹ C. to form the 2,6- dialkylphenol and the 1,3-dialkyl-5-t-alkyl benzene and circulating the latter to the first stage of the reaction for re-use. 2 - Chioro - 5 - t - butyl - m - xylene is prepared by chlorinating 5-t-butyl-m-xylene using molecular chlorine. 2,6 - Dimethyl - 4 - t - butyl benzene sulphonate was prepared by reacting 5-t-butyl-m-xylene with conc. sulphuric acid followed by sodium chloride. 2,6 - Dimethyl - 4 - t - butyl phenol was prepared by alkali fusion of the corresponding sulphonate or by hydrolysis of the corresponding chloride.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2374067 | 1967-04-14 | ||
JP2547767 | 1967-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1227419A true GB1227419A (en) | 1971-04-07 |
Family
ID=26361146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1227419D Expired GB1227419A (en) | 1967-04-14 | 1968-04-16 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1227419A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2499067A1 (en) * | 1980-03-14 | 1982-08-06 | Ugine Kuhlmann | PROCESS FOR THE PREPARATION OF PRACTICALLY PURE META-ISOPROPYLPHENOL |
US6939998B2 (en) | 2002-09-06 | 2005-09-06 | The University Of Southern Mississippi Research Foundation | Preparation of 5-tert-butyl-metaxylene using a solid active clay catalyst |
-
1968
- 1968-04-16 GB GB1227419D patent/GB1227419A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2499067A1 (en) * | 1980-03-14 | 1982-08-06 | Ugine Kuhlmann | PROCESS FOR THE PREPARATION OF PRACTICALLY PURE META-ISOPROPYLPHENOL |
US6939998B2 (en) | 2002-09-06 | 2005-09-06 | The University Of Southern Mississippi Research Foundation | Preparation of 5-tert-butyl-metaxylene using a solid active clay catalyst |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |