cas 2051-79-8, 4-(N,N-Diethyl)-2-methyl-p-phenylenediamine monohydrochloride | Articles data ｜lookchem

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2051-79-8

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Aggregated dyes for radiation-sensitive elements
A dispersion comprising an aqueous medium having dispersed therein an aggregated dye of the Formula (I): wherein X is oxygen or sulfur; R1-R4each independently represent an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group or an unsubstituted or substituted heteroaryl group; L1, L2and L3each independently represent substituted or unsubstituted methine groups; M+represents a proton or an inorganic or organic cation; and n is 0, 1, 2 or 3 and wherein the aggregated dye in the dispersion has an absorption halfbandwidth of less than 55 nm.
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(2008/06/13)

Process for preparing 4-amino-3-methyl-N-substituted or unsubstituted alkylanilines
A process for the preparation of 4-amino-3-methyl-N-substituted or unsubstituted alkylanilines comprising acylating and/or sulfonylating 4-amino-3-methyl-nitro-benzene having the formula (I) STR1 with an acylation or sulfonylation agent to obtain a compound having the general formula (II) STR2 wherein R1 represents a hydrogen atom or an acyl group, R2 represents an acyl group or a sulfonyl group, or R1 and R2 can combine as a difunctional acyl group; reducing the nitro group of the compound having the general formula (II) with hydrogen in the presence of a metal hydrogenation catalyst to obtain a compound having the general formula (III) STR3 wherein R1 and R2 are as above defined; alkylating the amino group of the compound having the general formula (III) with an alkylation agent selected from the group consisting of an alkyl halide, a substituted alkyl halide and an alkylene oxide to obtain a compound having the general formula (IV) STR4 wherein R1 and R2 are as above defined, R3 represents an alkyl group or a substituted alkyl group and R4 represents a hydrogen atom, an alkyl group or a substituted alkyl group; and hydrolyzing the compound having the general formula (IV) to obtain a compound having the general formula (V) STR5 wherein R3 and R4 are as above defined.
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(2008/06/13)

More Articles about upstream products of 2051-79-8

64-67-5
diethyl sulfate

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Chemical Properties

Appearance/Colour :White to grey white crystal
Melting Point: 250 °C (dec.)(lit.)
Boiling Point: 300.3 °C at 760 mmHg
Flash Point:122 °C
Solubility:DMSO (Slightly), Methanol (Slightly)
Storage Temp.:Inert atmosphere,Room Temperature
PSA: 29.26000
LogP: 3.80660

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