Process for the preparation of chlorofluoronitrobenzenes

Details Process for the preparation of chlorofluoronitrobenzenes Process for the preparation of chlorofluoronitrobenzenes

1994-05-05

1995-10-31

Wu, Shean

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

Organic compounds

Oxygen containing

568937, C07C20500

Patent

active

054631483

ABSTRACT:
A process for the preparation of chlorofluoronitrobenzenes in high yields, by reacting dichloronitrobenzenes with alkali metal fluorides having a water content of up to about 2.5% by weight in the presence of a quaternary ammonium and/or phosphonium salt, a crown ether and/or polyethylene glycol dimethyl ether as catalyst in the presence of an aprotic solvent, the boiling point of which is below the reaction temperature under the pressure conditions chosen, at temperatures of about 125.degree. to about 200.degree. C.

REFERENCES:
patent: 4069262 (1978-01-01), Kunz
patent: 4140719 (1979-02-01), Tull et al.
patent: 4164517 (1979-08-01), Fuller
patent: 4226811 (1980-10-01), Oeser et al.
patent: 4287374 (1981-09-01), North
patent: 4642399 (1987-02-01), White
patent: 4849552 (1989-07-01), Cantrell
patent: 4973772 (1990-11-01), Cantrell
patent: 4978769 (1990-12-01), Kysela et al.
patent: 5081288 (1992-01-01), Blank et al.
Chen, W., Chem. Abs. 113:152000q (1990).

Affiliated with

Also associated with

Rating

Process for the preparation of chlorofluoronitrobenzenes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of chlorofluoronitrobenzenes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of chlorofluoronitrobenzenes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1773967