Process for making an acrylamide containing a dialkyl acetal gro

Details Process for making an acrylamide containing a dialkyl acetal gro Process for making an acrylamide containing a dialkyl acetal gro

1989-10-02

1990-09-25

Hollrah, Glennon H.

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

Organic compounds

Carboxylic acid esters

564135, 564136, C07C22930, C07C23102

Patent

active

049594893

ABSTRACT:
A process is provided for making an N-substituted acrylamide dialkyl acetal, such as acrylamidobutyraldehyde dimethylacetal (ABDA), by blocking the double bond in an acrylic acid ester with a nucleophile, such as methanol, removing excess nucleophile from the blocked ester, aminating the blocked ester with an amino dialkyl acetal in the presence of an aminolysis catalyst but in the absence of any protic solvent, and deblocking the double bond in the product by pyrolysis.

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"Kinetics of Reversible Endothermic Elimination Reactions: Beta-Amino Carboxylic Esters and Amides," M. R. Johnson, J. Org. Chem., p. 833-837, (1986).

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