Novel process to prevent formation of chlorinated by-products in

Details Novel process to prevent formation of chlorinated by-products in Novel process to prevent formation of chlorinated by-products in

1989-04-24

1990-11-27

Elmore, Carolyn S.

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

Organic compounds

Amino nitrogen containing

C07C23325, C07B 4306

Patent

active

049737520

ABSTRACT:
A novel process is disclosed for the prevention of the formation of chlorinated by-products during the Beckmann rearrangement of 4-hydroxyacetophenone oxime to APAP utilizing thionyl chloride as catalyst, by the addition of an inorganic iodide such as potassium iodide to the Beckmann rearrangement reactor.

REFERENCES:
patent: 4524217 (1985-06-01), Davenport et al.
patent: 4560789 (1985-12-01), Davenport et al.
patent: 4568763 (1986-02-01), Davenport et al.
patent: 4855499 (1989-08-01), Fruchey
Donaruma et al., Organic Reactions, vol. II, Chapter I, pp. 1-157 (1960).

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