Novel process for the preparation of amine-terminated compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

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558265, 558269, 560169, 564135, 564337, 564346, 564393, 564396, 564397, 564468, 564471, 564472, C07C20900

Patent

active

050668242

ABSTRACT:
The present invention is directed to a process for preparing amine terminated compounds by reacting a polyfunctional acetoacetic acid ester with either ammonia or an organic compound which contains one or more primary amino groups in the presence of a solvent and an acidic catalyst selected from the group consisting of (i) boron trifuloride etherate and (ii) organic acids having pKa values of from 0.1 to 0.8 with the proviso that if the primary amino group containing compound contains no aromatically bound amino groups, the pKa of said organic acid is from 0.1 to less than 0.7.

REFERENCES:
patent: 3211793 (1965-10-01), Roos
patent: 3666726 (1972-05-01), Grogler et al.
patent: 3691112 (1972-09-01), Grogler et al.
patent: 4188403 (1980-02-01), Orth et al.

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