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

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

1978-12-20

1980-09-23

Coughlan, Jr., Paul M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548259, C07D24920

Patent

active

042244510

ABSTRACT:
A two stage reductive ring closure of o-nitrophenylazophenols produces 2-aryl-2H-benzotriazoles by (a) reacting an organic solvent solution of azophenol with an excess of an aqueous solution of a sulfhydrate or sulfide to form an N-oxide and (b) reducing the N-oxide with an alkali metal hydroxide plus zinc or tin.

REFERENCES:
patent: 2362988 (1944-11-01), Conzetti et al.
patent: 4001266 (1977-01-01), Rody et al.

Affiliated with

Also associated with

Rating

Process for the preparation 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 preparation 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 preparation of 2-aryl-2H-benzotriazoles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-645498