GB1469896A - Process for the manufacture of a hydroxytetramethyl-butylbenzene - Google Patents

Process for the manufacture of a hydroxytetramethyl-butylbenzene

Info

Publication number
GB1469896A
GB1469896A GB3955975A GB3955975A GB1469896A GB 1469896 A GB1469896 A GB 1469896A GB 3955975 A GB3955975 A GB 3955975A GB 3955975 A GB3955975 A GB 3955975A GB 1469896 A GB1469896 A GB 1469896A
Authority
GB
United Kingdom
Prior art keywords
sulphuric acid
manufacture
trimethylpentene
diisobutylene
reaction
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
Application number
GB3955975A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB1469896A publication Critical patent/GB1469896A/en
Expired legal-status Critical Current

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
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by addition reactions, i.e. reactions involving at least one carbon-to-carbon unsaturated bond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1469896 Preparation of hydroxytetramethylbutylbenzene CIBA GEIGY AG 26 Sept 1975 [9 Oct 1974] 39559/75 Heading C2C The invention comprises a process for the manufacture of a hydroxy-(1,1,3,3-tetramethylbutyl)-benzene by reacting the corresponding hydroxybenzene with 2,4,4-trimethylpentene in the presence of a hydroxyalkyl compound and using highly concentrated sulphuric acid (as hereinafter defined) as the catalyst, characterized in that the reaction is carried out in the presence of ethylene glycol. By highly concentrated sulphuric acid is meant a sulphuric acid which contains 90 to 98% by weight of H 2 SO 4 , the remainder consisting essentially of water. It is possible to use as the 2,4,4-trimethylpentene either of the two isomers, that is to say α-diisobutylene of the formula or #-diisobutylene of the formula or, usually particularly advantageously, a mixture of the two. The ratio of ethylene glycol to sulphuric acid, in parts by volume, which is used for the reaction is advantageously 1 : 2 to 2 : 1.
GB3955975A 1974-10-09 1975-09-26 Process for the manufacture of a hydroxytetramethyl-butylbenzene Expired GB1469896A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1356874A CH594582A5 (en) 1974-10-09 1974-10-09

Publications (1)

Publication Number Publication Date
GB1469896A true GB1469896A (en) 1977-04-06

Family

ID=4393523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3955975A Expired GB1469896A (en) 1974-10-09 1975-09-26 Process for the manufacture of a hydroxytetramethyl-butylbenzene

Country Status (4)

Country Link
JP (1) JPS5163135A (en)
CH (1) CH594582A5 (en)
DE (1) DE2544904A1 (en)
GB (1) GB1469896A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740449A1 (en) * 1995-10-31 1997-04-30 Rhone Poulenc Chimie PROCESS FOR C-ALKYLATION OF HYDROXYLIC AROMATIC COMPOUNDS
US6255538B1 (en) 2000-01-05 2001-07-03 Eastman Chemical Company Process for the C-alkylation of aromatic hydroxyl compounds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740449A1 (en) * 1995-10-31 1997-04-30 Rhone Poulenc Chimie PROCESS FOR C-ALKYLATION OF HYDROXYLIC AROMATIC COMPOUNDS
WO1997016402A1 (en) * 1995-10-31 1997-05-09 Rhodia Chimie Method for c-alkylating hydroxylated aromatic compounds
US6049015A (en) * 1995-10-31 2000-04-11 Rhodia Chimie Method for C-alkylating hydroxylated aromatic compounds
US6255538B1 (en) 2000-01-05 2001-07-03 Eastman Chemical Company Process for the C-alkylation of aromatic hydroxyl compounds

Also Published As

Publication number Publication date
CH594582A5 (en) 1978-01-13
DE2544904A1 (en) 1976-04-22
JPS5163135A (en) 1976-06-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee