Process for the preparation of symmetrical and unsymmetrical azi

Details Process for the preparation of symmetrical and unsymmetrical azi Process for the preparation of symmetrical and unsymmetrical azi

1974-12-13

1976-08-03

Schwartz, Gerald A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505R, 260505E, 260507R, 260508, 260509, 260510, 260513N, 260514S, 260518R, 260518A, 260519, 260534R, 260534M, 260558A, 260558D, 260559A, 260561A, 260566B, C07C10900

Patent

active

039728765

ABSTRACT:
A process is disclosed for the preparation of symmetrical azines of the formulas ##EQU1## and unsymmetrical azines of the formulas ##EQU2## and mixtures of azines (I), (II), and (IV), and (I), (III) and (V), wherein R.sup.1 , R.sup.2, R.sup.3 and R.sup.4 each is hydrogen, a straight-chain alkyl radical of from 1 to 12 carbon atoms, a branched-chain alkyl radical or a cycloalkyl radical of from 3 to 12 carbon atoms or a phenyl radical, the aforesaid radicals being unsubstituted or substituted with a radical which is stable in the medium in which said azines are produced; and in which case R.sup.1 and R.sup.2 can be the same or different radicals, R.sup.3 is a radical different from R.sup.1 and R.sup.2, R.sup.3 and R.sup. 4 are radicals different from each other, and each are different radicals from R.sup.1 and R.sup.2 ; or R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3, or R.sup. 3 and R.sup.4 of either or both the >C=N-- moieties together form a cyclic or substituted cyclic radicals of from 3 to 11 carbon atoms in the ring.

REFERENCES:
patent: 2870206 (1959-01-01), Meyer et al.

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