Method of recovering cyanopyridines
View Patent ↗Hydrolysis of cyanopyridine may be reduced by use of picoline as a predominately non-aqueous quench fluid. The picoline quench fluid may also be a reactant in the manufacture of cyanopyridine.
1. A method of quenching gaseous reaction mixtures, comprising the step of:
supplying a reaction mixture that contains predominately 2-cyanopyridine;
providing a quench fluid that contains predominately 2-picoline, and not more than 20% water; and
contacting the reaction mixture with said predominately non-aqueous quench fluid.
2. The method of claim 1 wherein the only cyanopyridine in the reaction mixture is 2-cyanopyridine.
3. The method of claim 1 wherein said quench fluid minimizes hydrolysis of the 2-cyanopyridine as compared to quenching with a predominately aqueous quench fluid.
4. The method of claim 1 , wherein said quench fluid includes not more than 10% water.
5. The method of claim 1 , wherein said quench fluid includes not more than 5% water.
6. The method of claim 1 , wherein said quench fluid includes at least 0.1% ammonia.