Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent
Patent
1986-03-21
1988-11-29
Morgan, Kriellion
Organic compounds -- part of the class 532-570 series
Organic compounds
Chalcogen in the nitrogen containing substituent
546186, 546187, C07D21116
Patent
active
047882832
ABSTRACT:
Compounds containing a group of the formula I ##STR1## in which R is H or C.sub.1 -C.sub.4 -alkyl, R.sup.1 is H, CN, an acyloxy group or a free valency and R.sup.2 and R.sup.3 are organic radicals can be prepared in a simple manner from the corresponding compounds containing a group of the formula Ia ##STR2## by stepwise reaction with phosgene and a secondary amine R.sup.2 --NH--R.sup.3 in the presence of a molar amount of a base. The N-diorganocarbamoyl compounds containing the group I are outstanding light stabilizers, in particular for organic polymers. They can be converted by secondary reactions into other compounds which contain the group I and which are not accessible by direct phosgenation. Many of the products thus obtainable by phosgenation or conversion are novel compounds.
REFERENCES:
patent: 4021432 (1977-05-01), Holt et al.
patent: 4069196 (1978-01-01), Ramey et al.
patent: 4344876 (1982-08-01), Berner
patent: 4369321 (1983-01-01), Cantatore
patent: 4412021 (1983-10-01), Karrer
patent: 4556714 (1985-12-01), Karrer
patent: 4569997 (1986-02-01), Karrer
patent: 4590268 (1986-05-01), Karrer
Journal F. Prakt. Chemie 319, 516-521 (1977).
Ciba-Geigy Corporation
Falber Harry
Morgan Kriellion
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