N,N-di(carbonyl chlorides) of N,N'-alkylene ureas

Details N,N-di(carbonyl chlorides) of N,N'-alkylene ureas N,N-di(carbonyl chlorides) of N,N'-alkylene ureas

1975-08-25

1976-12-14

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602393R, 260251R, C07D23338

Patent

active

039975541

ABSTRACT:
Compounds of the formula ##STR1## wherein --R-- is di-, tri- or tetramethylene which may bear from 1 to 8 C.sub.1 -C.sub.3 alkyl substituents, and a process for their preparation wherein a reactant of the formula ##STR2## is contacted, at reaction temperature, with COCl.sub.2. For example, 2-imidazolidone is contacted with phosgene to form N,N'-bis(carbonyl chloride)-2-imidazolidone. The compounds may be condensed with polyols, polythiols or polyamines to form useful resins or pyrolyzed to give alkylene diisocyanates.

REFERENCES:
patent: 3275618 (1966-09-01), Tilley et al.
patent: 3304327 (1967-02-01), Rapaelian et al.
patent: 3506551 (1970-04-01), Beck et al.
Zav'yalov et al. Izv. Akad. Nauk SSSR, Ser. Khim. 1972, (10), pp. 2308-2312.
Laboratoires Bruneau & Cie, Chem. Abst., vol. 62, Cols. 574-575 (1965).
Ulrich et al., J. Org. Chem., vol, 29, pp. 2401-2404, (1964).

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