March 3, 2014

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 63 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.

CAPLUS COPYRIGHT 2014 ACS

Patent Number: US 8592631
Title: Process for the preparation of 2-methoxymethyl-1,4-benzenediamine, derivatives thereof and the salts thereof
Inventor(s): Gardlik, John Michael; Garrett, Garry Steven; Murphy, Bryan Patrick; Janusz, John Michael; Wos, John August
Patent Assignee(s): The Procter & Gamble Company, USA
Source: PCT Int. Appl., 34pp. CODEN: PIXXD2
Language: English

Abstract:
This invention relates to a process for synthesizing 2-methoxymethyl-1,4-benzenediamine (I), its derivs. II [R1-R3 = (un)substituted (hetero)alkyl, aryl, heteroaryl; R4 = H, hydroxyalkyl, (un)substituted alkyl, etc.; R5 = H, (un)substituted (hetero)alkyl, (un)substituted (un)satd. alkyl systems; R6, R7 = H, OH, alkyl, etc.; n = 0-3] and the salts thereof, which comprises a reductive amination step. The preferred final product is 2-methoxymethyl-1,4-benzenediamine (I). Thus, methylating 2-hydroxymethylphenol in MeOH followed by nitrosation of the resulting 2-methoxymethylphenol, condensation of III with hydroxylamine, and redn. of IV in the presence of a catalyst afforded the final product I.  These compds. may be used as primary intermediates in compns. for dyeing keratin fibers.

Please note:  Abstracts and Titles for patent records in CAplus are routinely enhanced to better describe the claimed invention.

 View the full-text here.

Recent News

    
    June 28, 2016 | CAS continues to provide unparalleled
    discoverability of chemistry with the launch of 
    ChemZent
    
    April 4, 2016
| PatentPak, a CAS Solution Redefines
    Finding Chemical Information in Patents

    January 11, 2016 | Get the Latest Release of STN
    Express, Version 8.6!
 
                                                                    More News >> 
 
 

Media Contact

 Name: Rhonda Ross
 Phone: 614-447-3624
 Email: cas-pr@cas.org