Preparation of 2-imidazolines

Details Preparation of 2-imidazolines Preparation of 2-imidazolines

1979-11-27

1981-11-03

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548355, C07D23310, C07D23306

Patent

active

042987482

ABSTRACT:
A novel process for the preparation of 2-imidazolines by reacting 1,2-diamines with nitriles or carbonyl compounds in the gas phase at from 200.degree. to 450.degree. C. in the presence of an oxide or phosphate of a metal of group 3 or 4 of the periodic table and/or in the presence of silicon dioxide.
The 2-imidazolines obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents and drugs.

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Riebsomer, J. Amer. Chem. Soc. 70 (1948), pp. 1629-1632.
Ullmanns Encyklopadie der Technischen Chemie, vol. 13, pp. 331-338, and vol. 1, p. 916.

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