PROCESS FOR PREPARING A PHOSPHORIC ACID SALT OF N-METHYL-O-PHENYLENEDIAMINE

Application IN/PCT/2001/01041/MUM published 2007-03-23, filed 2001-09-04
The invention relates to a novel salt of N-methyl-o-phenylenediamine of general formula I wherein n is a number between 0.5 and 1.0 and wherein, N-methyl-o-phenylenediamine is dissolved in a solvent as herein described and mixed with crystalline or dissolved phosphoric acid.

Applicant

1)BOEHRINGER INGELHEIM PHARMA GMBH & CO.KG
:173, BINGER STRASSE, INGELHEIM, 55216 Germany

Inventor

1)HEINRICH SCHNEIDER No of Pages : 7 No of Claims : 6

International Info

Classification: CO7C 211/51
Publication Number: WO 00/63156
Application Date: 2000-04-12

Priority Information

19917526.8 Germany 1999-04-17