Methods for triazole synthesis

Patent metadata

Field	Value
Publication number	US-9051282-B2
Application number	US-201213717679-A
Country	US
Kind code	B2
Filing date	Dec 17, 2012
Priority date	Dec 16, 2011
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

Disclosed are methods of synthesizing triazoles that avoids the use of concentrated acids in favor of carbonic acid generated from CO 2 that can be practiced at ambient and/or elevated temperature and/or atmospheric and/or elevated pressures. The disclosed methods also provide a way of synthesizing triazole products that are sufficiently pure and/or of sufficient concentration whereby the reaction product(s) may not require purification or other treatment before being used in, for example, formulating water treatment compositions that will tend to suppress corrosion or as an intermediate product in a more complex synthesis.

First claim

We claim:

1. A method for synthesizing a 1,2,3-triazole compound in an aqueous solution comprising:
forming an aqueous solution of a diamine and a nitrite salt;
introducing carbon dioxide into the aqueous solution to form carbonic acid;
reacting a portion of the carbonic acid with the nitrite salt to produce nitrous acid and a bicarbonate; and
reacting the diamine with a portion of the nitrous acid for a reaction period at a reaction pressure and a reaction temperature suffi…

Assignees

• Chemtreat Inc

Inventors

• Henderson William H
• Richardson John

Classifications

• C07D249/18 Primary

  Chemistry & Metallurgy · mapped topic