cas 337906-36-2, 2-(methoxymethyl)benzene-1,4-diamine

Articles about 337906-36-2Total 11 be found

NEW TELESCOPING SYNTHESES OF 2-METHOXYMETHYL-P-PHENYLENEDIAMINE
The invention relates to processes for preparing 2 -methoxymethyl-p-phenylenediamine (I), cosmetically acceptable salts thereof, or mixtures thereof.
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(2021/02/19)

PROCESS FOR THE PREPARATION OF 2-ALKOXYMETHYL-1, 4-BENZENEDIAMINES
A process for synthesizing 2-methoxymethyl-l,4-benzenediamines which comprises a radical halogenation step of compounds of formula (II) to compounds of formula (III). The final product can be 2-methoxymethyl-l,4-benzenediamine useful as coupler or primary intermediate in compositions for dyeing keratin fibers.
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Page/Page column 20; 22

(2017/08/26)

A 2 - ( methoxy methyl ) phenyl -1,4-diamine preparation method
The invention relates to a method for preparing 2-(methoxyl-methyl) phenyl-1,4-diamine. The method comprises the following steps: by taking o-nitrobenzyl alcohol as a raw material, performing methylation and hydrogenation reduction reaction so as to obtai
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(2016/12/16)

New Telescoping Synthesis Of 2- Methoxymethyl-P-Phenylenediamine
A telescoping process for the preparation of 2-methoxymethyl-p-phenylenediamine, a cosmetically acceptable salt thereof, or mixture thereof. The process according to the present invention is a particularly cost effective process in that it avoids sophisticated chemical steps which requires special equipment or expensive catalysts and in that it comprises a recycling step of one of the starting materials, namely 2-hydroxymethylaniline.
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Paragraph 0049

(2016/05/24)

Process for Preparing Primary Intermediates for Dyeing Keratin Fibers
A process has been developed for preparing 2-methoxymethyl-1,4-benzenediamine (IV-a), other compounds of formula (IV), and the salts thereof, all of which may be used as primary intermediates in compositions for dyeing keratin fibers.
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Paragraph 0047

(2014/05/08)

Process for Preparing Primary Intermediates for Dyeing Keratin Fibers
A process has been developed for preparing 2-methoxymethyl-1,4-benzenediamine (IV-a), other compounds of formula (IV), and the salts thereof, all of which may be used as primary intermediates in compositions for dyeing keratin fibers.
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Paragraph 0053

(2014/05/08)

Methods of Synthesizing 2-Substituted-1,4-Benzenediamine
Disclosed is a method of making a 2-substituted-1,4-benzenediamine by nucleophilic aromatic substitution.
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(2012/04/05)

METHODS OF SYNTHESIZING 2-METHOXYMETHYL-1,4-BENZENEDIAMINE
Disclosed is a method of making 2-methoxymethyl-1,4-benzenediamine that includes hydrogenating 1-benzylamino-2-(methoxymethyl)-4-nitrobenzene in the presence of a hydrogenation catalyst.
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(2012/04/17)

PROCESS FOR THE PREPARATION OF 2-METHOXYMETHYL-1,4-BENZENEDIAMINE, ITS DERIVATIVES THEREOF AND THE SALTS THEREOF
A process for synthesizing 2-methoxymethyl-1,4-benzenediamine, its derivatives of formula (IV) and the salts thereof, which comprises a reductive amination step. The preferred final product is 2-methoxymethyl-1,4-benzenediamine of formula (IV-a). (Formula
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Page/Page column 20

(2012/06/16)

1,3-Dihydroxybenzene derivatives and colorants containing said compounds
1,3-Dihydroxybenzene derivatives of general formula (I) or (Ia) or physiologically tolerated, water-soluble thereof wherein R′1 denotes substituted pyridyl group, a pyrimidyl group, a group of formula (IIa) or (IIIa) and the dyeing agents for keratin fibers containing these compounds.
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(2008/06/13)

Means and method for dying keratinic fibers
Composition for coloring keratin fibers based on a developer-coupler combination characterized in that it contains as the coupler 3-(2,4-diaminophenoxy)-1-propanol and as the developer a p-phenylenediamine derivative monosubstituted on the benzene ring and having general formula (I) ?and/or a 4,5-diamino-1H-pyrazole derivative of general formula (II) ?and/or a p-aminophenol derivative of general formula (III) ?as well as a method for the oxidative coloring of hair, and the use of said composition.
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(2008/06/13)