Preparation of 1,2 diaminobenzene by high pressure acid hydrolys

Details Preparation of 1,2 diaminobenzene by high pressure acid hydrolys Preparation of 1,2 diaminobenzene by high pressure acid hydrolys

1978-09-27

1982-03-09

Doll, John

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

Organic compounds

Amino nitrogen containing

548305, C07C 8520

Patent

active

043190464

ABSTRACT:
This invention is directed to a process for preparing 1,2-diaminobenzene which comprises acid hydrolyzing 2-benzimidazolone in an aqueous medium at elevated temperatures and pressures.

REFERENCES:
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patent: 3441586 (1969-04-01), Luberoff et al.
patent: 3620929 (1971-11-01), Kober et al.
Wertheim, "Organic Chemistry", Third Edition, pp. 309-310 (1951).
Hackh's Chemical Dictionary, Fourth Edition, p. 87 (1972).
Sawlewicz et al., "Roczniki Chemii Ann. Soc. Chim. Polonorum", vol. 38, pp. 1073-1078 (1964).
Israel et al., "J. Heterocyclic Chem.", vol. 8, pp. 1015-1018 (1971).
Harple et al., "Analytical Chem.", vol. 42, pp. 1658-1659 (1970).
Rossi et al., "Helv. Chem. Acta", vol. 43, pp. 1046-1056 (1960).
Popov et al., "Chem. Ab.", vol. 85, Ab. No. 46503z (1976).
Sawlewicz et al., "Chem. Ab.", vol. 62, Ab. No. 6473h (1965).

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