Process for the preparation of a mixture of aminomethylenated gl

Details Process for the preparation of a mixture of aminomethylenated gl Process for the preparation of a mixture of aminomethylenated gl

1994-12-08

1995-12-12

Brust, Joseph Paul

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

Organic compounds

Nitriles

558360, 558361, 558377, C07C25330

Patent

active

054751314

ABSTRACT:
Aminomethylenated glutaconic acid dinitriles of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent hydrogen, straight-chain or branched C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -alkenyl, C.sub.2 -C.sub.8 -alkoxyalkyl, C.sub.4 -C.sub.8 -alkoxyalkenyl, C.sub.3 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.12 -aryl, C.sub.7 -C.sub.10 -aralkyl or a 5- to 8-membered, saturated or unsaturated heterocyclic ring containing 1 or 2 heteroatoms from the group comprising N, O and S,
are obtained by reacting 3-amino-acrylonitriles of the formula ##STR2## in which the radicals R.sup.1 and R.sup.2 have the meaning mentioned, with one another at from 0.degree. to 100.degree. C. in the presence of at least 0.5 equivalents of an acidic compound.

REFERENCES:
patent: 3138631 (1964-06-01), Frazza et al.
patent: 4849432 (1989-02-01), Shiokawa et al.
patent: 4849519 (1989-07-01), Maurer
Scotti, et al.; J. Org. Chem. 29 (1964), pp. 1800-1808.
Sasaki, et al.; J. Chem. Soc. 1969 (c), pp. 1086-1088.

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