Process for the production of 2-aryl-2H-benzotriazoles

Details Process for the production of 2-aryl-2H-benzotriazoles Process for the production of 2-aryl-2H-benzotriazoles

1977-08-17

1979-02-27

Coughlan, Jr., Paul M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D24920

Patent

active

041419030

ABSTRACT:
A process for the production of 2-aryl-2H-benzotriazoles comprises reducing and cyclizing the corresponding o-nitroazobenzenes with carbon monoxide at a temperature in the range of about 20.degree. C. to about 150.degree. C. and at a pressure in the range of about 15 psia (1 atmosphere) to about 1000 psia (66 atmospheres) in an alkaline medium at a pH over 10 in the presence of a copper-amine complex catalyst. High yields of pure product are obtained with a concomitant reduction of undesired by-products and a reduction in effluent pollution problems.

REFERENCES:
patent: 3978074 (1976-08-01), Jancis

Affiliated with

Also associated with

Rating

Process for the production of 2-aryl-2H-benzotriazoles 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 production of 2-aryl-2H-benzotriazoles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of 2-aryl-2H-benzotriazoles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-722336