GB930090A - - Google Patents

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Publication number
GB930090A
GB930090A GB930090DA GB930090A GB 930090 A GB930090 A GB 930090A GB 930090D A GB930090D A GB 930090DA GB 930090 A GB930090 A GB 930090A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
diamine
imidazole
ethylene diamine
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.)
Active
Application number
Publication of GB930090A publication Critical patent/GB930090A/en
Active legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/26—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/10—Heat treatment in the presence of water, e.g. steam
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

930,090. Imidazoles and pyrimidines. HOUDRY PROCESS CORPORATION. June 16, 1960 [July 6, 1959], No. 21183/60. Class 2(3). Imidazoles and pyrimidines are prepared by reacting in vapour phase an alkylene diamine with an alcohol or aldehyde in the presence of a catalyst having dehydration and dehydrogenation activity, the alkylene diamine containing 2 to 4 carbon atoms and having the amino groups spaced no further apart than on alternate carbon atoms and the aldehyde or alcohol having the formula R,CHO or R 1 CH 2 OH respectively, R, being hydrogen, an alkyl radical of l-6 carbon atoms, a cycloalkyl radical of 5-7 carbon atoms, OF an aryl radical of 6-7 carbon atoms. Suitable diamines are, for example, ethylene diamine; propylene diamine-1,3; propylene diamine-1,2; butylene diamine-2,3; and butylene-diamine-1,2. When the amino groups are on adjacent carbon atoms an imidazole is formed and when an alternate carbon atoms a pyrimidine is formed. Suitable catalysts are, for example, a platinumalumina catalyst or a cobalt molybdate catalyst. It is desirable to effect the reaction in the presence of added hydrogen. Examples are given of the preparation of (a) imidazole 'from ethylene diamine and formaldehyde; (b) 2-ethyl-i.nidazole from propionaldehyde and ethylene diamine; and (c) 2-methyl-imidazole from ethylene diamine and ethanol. It is stated that 2-n-propyl, 2-n-butyl, 2-n-amyl, 2-phenyl, 2-benzyl and 2,5-dimethyl imidazoline can be similarly prepared.
GB930090D Active GB930090A (en)

Publications (1)

Publication Number Publication Date
GB930090A true GB930090A (en)

Family

ID=1753701

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181026A1 (en) * 1984-10-26 1986-05-14 Stamicarbon B.V. Process for preparing pyrimidine
EP0192299A1 (en) * 1985-02-15 1986-08-27 Stamicarbon B.V. Process for the preparation of pyrimidine and 2-alkylpyrimidine
EP0192297B1 (en) * 1985-02-15 1990-09-19 Stamicarbon B.V. Process for the preparation of a 2-alkylpyrimidine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181026A1 (en) * 1984-10-26 1986-05-14 Stamicarbon B.V. Process for preparing pyrimidine
EP0192299A1 (en) * 1985-02-15 1986-08-27 Stamicarbon B.V. Process for the preparation of pyrimidine and 2-alkylpyrimidine
US4775755A (en) * 1985-02-15 1988-10-04 Stamicarbon B. V. Process for the preparation of pyrimidine and 2-alkylpyrimidine
EP0192297B1 (en) * 1985-02-15 1990-09-19 Stamicarbon B.V. Process for the preparation of a 2-alkylpyrimidine

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