GB1426834A - Production of substituted imidazoles - Google Patents

Production of substituted imidazoles

Info

Publication number
GB1426834A
GB1426834A GB3221973A GB3221973A GB1426834A GB 1426834 A GB1426834 A GB 1426834A GB 3221973 A GB3221973 A GB 3221973A GB 3221973 A GB3221973 A GB 3221973A GB 1426834 A GB1426834 A GB 1426834A
Authority
GB
United Kingdom
Prior art keywords
formula
silicon dioxide
production
july
catalyst
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
GB3221973A
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.)
BASF SE
Original Assignee
BASF SE
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
Priority claimed from DE19722233908 external-priority patent/DE2233908C3/en
Application filed by BASF SE filed Critical BASF SE
Publication of GB1426834A publication Critical patent/GB1426834A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1426834 Substituted imidazoles BASF AG 6 July 1973 [10 July 1972] 32219/73 Addition to 1243078 Heading C2C [Also in Division B1] A substituted imidazole of the formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are the same or different, and represent hydrogen, or an aliphatic, araliphatic, cycloaliphatic or aromatic radical and R<SP>4</SP> represents an aliphatic radical, or R<SP>1</SP> and R<SP>2</SP> together form a condensed aromatic ring, are obtained by reacting an imidazole of the formula with a compound of the formula wherein R<SP>5</SP> represents hydrogen or an aliphatic radical, at a temperature from 200‹ to 450‹ C. in the presence of a catalyst with contains silicon dioxide and phosphoric acid in an amount from 0À1 to 20% by wt. of phosphoric acid based on silicon dioxide and has a particle size of not more than 0À1 mm. and a specific total surface area of from 50 to 500 square meters/ gram. Silicic acid compounds may be used as silicon dioxide in the catalyst. Examples are given for the production of the compounds.
GB3221973A 1972-07-10 1973-07-06 Production of substituted imidazoles Expired GB1426834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722233908 DE2233908C3 (en) 1972-07-10 Process for the preparation of substituted imidazoles

Publications (1)

Publication Number Publication Date
GB1426834A true GB1426834A (en) 1976-03-03

Family

ID=5850247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3221973A Expired GB1426834A (en) 1972-07-10 1973-07-06 Production of substituted imidazoles

Country Status (5)

Country Link
JP (1) JPS4951277A (en)
CH (1) CH548399A (en)
FR (1) FR2192105B2 (en)
GB (1) GB1426834A (en)
NL (1) NL7309512A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5877326A (en) * 1996-08-19 1999-03-02 Basf Aktiengesellschaft Aqueous phase process for preparing N-substituted imidazoles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH496710A (en) * 1967-12-16 1970-09-30 Basf Ag Process for the preparation of substituted imidazoles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5877326A (en) * 1996-08-19 1999-03-02 Basf Aktiengesellschaft Aqueous phase process for preparing N-substituted imidazoles

Also Published As

Publication number Publication date
DE2233908B2 (en) 1977-02-17
CH548399A (en) 1974-04-30
JPS4951277A (en) 1974-05-18
FR2192105B2 (en) 1978-08-04
DE2233908A1 (en) 1974-01-24
FR2192105A2 (en) 1974-02-08
NL7309512A (en) 1974-01-14

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Legal Events

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