[EN] IMPROVED SYNTHESIS OF N,N-DISUBSTITUTED-p-PHENYLENEDIAMINE<br/>[FR] PROCEDE DE SYNTHESE AMELIOREE DE N,N-DISUBSTITUEE-P-PHENYLENEDIAMINE
申请人:ANTICANCER INC
公开号:WO2001051452A1
公开(公告)日:2001-07-19
An improved synthesis of N,N-disubstituted-p-phenylene-diamine (DSPDA) preferably di-n-butyl-p-phenylenediamine is disclosed. The improvement rests on the discovery that DSPDA and its salts are extremely sensitive to oxygen so that once the product DSPDA or its salt is formed, oxygen must be excluded from all manipulations.