Processes for the synthesis of 3-disubstituted aminoacroleins

Details Processes for the synthesis of 3-disubstituted aminoacroleins Processes for the synthesis of 3-disubstituted aminoacroleins

1991-02-26

1992-06-02

Springer, David B.

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

Organic compounds

Amino nitrogen containing

548494, 548502, C07C22100, C07C22500

Patent

active

051188538

ABSTRACT:
Process for the synthesis of compounds of the formula ##STR1## comprising the steps of (i) reacting a compound of the formula ##STR2## with oxalyl chloride or oxalyl bromide to form the corresponding compound of the formula ##STR3## (ii) reacting said compound of the formula ##STR4## with a compound of the formula ##STR5## to form the corresponding compound of the formula ##STR6## (iii) hydrolyzing said compound of the formula ##STR7## to obtain the corresponding compound of the formula ##STR8## the use of the compounds of the formula ##STR9## for the synthesis of the compounds of the formula ##STR10## and the use of the intermediates of Formula VII for the direct synthesis of the compounds of Formula II,
wherein

REFERENCES:
patent: 4739073 (1988-04-01), Kathawala
Eilingsfeld et al., Angew. Chem. 72, 836-845 (1960).

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