Process for the preparation of 3-isomers of 1-cyclohexyl-2-(1,2,

Details Process for the preparation of 3-isomers of 1-cyclohexyl-2-(1,2, Process for the preparation of 3-isomers of 1-cyclohexyl-2-(1,2,

1984-06-22

1986-08-19

Rollins, Alton D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24908

Patent

active

046071083

ABSTRACT:
The known E-isomers of compounds of the formula ##STR1## in which X and Y independently of each other represent hydrogen or halogen,
are obtained according to a new process, in which triazolylketones of the formula ##STR2## in which X and Y have the above mentioned meaning, are reacted with an excess of cyclohexanecarbaldehyde in the presence of a non-polar organic diluent and in the presence of a catalyst mixture of organic acids and secondary amines in a molar ratio of 1:0.5 to 1:1 at temperatures between 40.degree. and 100.degree. C. by continuously removing the water formed and subsequently working up in the manner that is described in the specification.

REFERENCES:
patent: 4486218 (1984-12-01), Reiser et al.
patent: 4501897 (1985-02-01), Reiser et al.

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