Preparation of alpha-formylamino nitriles

Details Preparation of alpha-formylamino nitriles Preparation of alpha-formylamino nitriles

1990-12-13

1991-12-31

Gray, Bruce D.

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

Organic compounds

Nitriles

546330, 548343, 548505, 548550, 548561, 549 13, 549 76, 549378, 549476, 549493, 558404, 558430, 558434, 558448, 558449, 558447, C07C25500

Patent

active

050774263

ABSTRACT:
A process for preparing .alpha.-formylamino nitriles of the formula Ia ##STR1## and Ib ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each is hydrogen or unsubstituted or substituted, with substituents which are inert under the reaction conditions, aliphatic or heteroaliphatic radicals with 1 to 10, cycloaliphatic or heterocycloaliphatic radicals with 3 to 6, araliphatic radicals with 7 to 12, heteroaraliphatic radicals with 4 to 12, aromatic radicals with 6 to 10 or heteroarometic radicals with 3 to 10 carbon atoms, with the priviso that at least one of R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 is hydrogen, comprises reacting an iminodiacetonitrile of the formula II ##STR3## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the abovementioned meanings, with formamide of the formula III ##STR4## in the presence of formic acid or with a compound which provides formic acid, in the presence of acids.

REFERENCES:
patent: 4701546 (1987-10-01), Bewert et al.
Justus Liebigs Ann. Chem. 735 (1970) pp. 27-34.

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