Continuous process for preparing derivatives of benzene with flu

Details Continuous process for preparing derivatives of benzene with flu Continuous process for preparing derivatives of benzene with flu

1974-11-07

1976-06-29

Horwitz, D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 2514, C07C 1720

Patent

active

039668320

ABSTRACT:
Preparation of derivatives of benzene containing CF.sub.3 groups from the corresponding compounds containing CCl.sub.3 groups (e.g. trichloromethyl benzene) is carried out continuously with excellent yield rates by reaction with liquid hydrogen fluoride in an autoclave above 80.degree.C, (which latter exceeds the stoichiometric proportion by at least 25 mole %). The reactants are fed continuously into the autoclave. The reaction mixture preferably becomes pressurized to at least 20 atmospheres and homogeneous after having reached a certain filling level. The reaction mixture is thereafter withdrawn proportionally to its feeding-in rate. The mixture may be conveyed through one or several additional autoclaves with the final withdrawal of the reaction mixture being out from the terminal autoclave of this cascade. The fluorination products are well known starting and inermediate products for the preparation of dyestuffs and pesticidal compositions.

REFERENCES:
patent: 1967244 (1934-07-01), Holt et al.
patent: 2562159 (1951-07-01), Wojcik et al.

Affiliated with

Also associated with

Rating

Continuous process for preparing derivatives of benzene with flu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous process for preparing derivatives of benzene with flu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous process for preparing derivatives of benzene with flu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1277992