Imidazoles and 2-alkyl imidazoles and method for their manufactu

Details Imidazoles and 2-alkyl imidazoles and method for their manufactu Imidazoles and 2-alkyl imidazoles and method for their manufactu

1976-03-31

1978-02-14

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23358

Patent

active

040740544

ABSTRACT:
The method is for manufacturing imidazoles corresponding to the general formula: ##STR1## in which R represents hydrogen or an alkyl radical of 1 to 17 carbon atoms. Glyoxal is condensed with an aliphatic aldehyde and ammonia, in a hydroalcoholic medium at a pH comprised between 6 and 8. The glyoxal is in the form of its bisulfite combination and the ammonia being supplied by an ammonium salt of a weak acid.

REFERENCES:
patent: 2801243 (1957-07-01), Hanslick et al.
patent: 2905692 (1959-10-01), Paleveda et al.
patent: 3361755 (1968-01-01), Green
patent: 3715365 (1973-02-01), Schulze
Groggins Unit Processes in Organic Synthesis 5th ed. p. 680, N.Y., McGraw-Hill 1963.
Fieser et al. Reagents for Organic Synthesis vol. 1, pp. 413-414, N.Y., Wiley, 1967.
Hofmann Imidazole and Its Derivatives Part I, pp. 33-39 N.Y., Interscience, 1953.

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