Process for the preparation of 2-benzoxazolone and derivatives f

Details Process for the preparation of 2-benzoxazolone and derivatives f Process for the preparation of 2-benzoxazolone and derivatives f

1983-01-24

1984-06-12

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548219, 260689, C07D49800, C07D26354

Patent

active

044543220

ABSTRACT:
Process for the preparation of 2-benzoxazolone and derivatives by the reaction, in the liquid phase, at a temperature from 100.degree. to 500.degree. C. and a pressure from 20 to 500 bars, of an ortho-nitrophenol of the formula: ##STR1## in which R represents a hydrogen or halogen atom, an alkyl group containing from 1 to 10 carbon atoms or an alkoxy group OR' in which R' represents an alkyl group containing from 1 to 10 carbon atoms, and carbon monoxide under pressure, characterized in that the process is carried out in the presence of

REFERENCES:
patent: 3523964 (1970-08-01), Kober et al.
patent: 3657265 (1972-04-01), Kober et al.
patent: 3678042 (1972-07-01), Matter
patent: 3832401 (1974-08-01), Knifton et al.
Manov-Yuvenskii et al., Uzb. Khim. Zh., (4), 26-29, (1980).
Nefedov, B. K., et al., Izv. Akad. Nauk. SSSR, (7), 1555-1559, (1977).

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