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118739-43-8

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118739-43-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118739-43-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,7,3 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 118739-43:
(8*1)+(7*1)+(6*8)+(5*7)+(4*3)+(3*9)+(2*4)+(1*3)=148
148 % 10 = 8
So 118739-43-8 is a valid CAS Registry Number.

118739-43-8Downstream Products

118739-43-8Relevant articles and documents

Oxidative activation in aromatic substitutions. Reactions of N,N- dimethylanilines with secondary anilines promoted by thallium triacetate

Ciminale,Ciardo,Francioso,Nacci

, p. 2459 - 2464 (2007/10/03)

The reactions of N,N-dimethyl-p-anisidine (1a), N,N-dimethylaniline (1b), and N,N-dimethyl-p-fluoroaniline (1c) toward secondary anilines 2(a- d)-H in the presence of thallium triacetate sesquihydrate have been studied as representative of a novel oxidatively activated aromatic substitution affording 1,4-benzenediamine derivatives 3a-d. All of the substrates considered gave substitution with diphenylamine (2d-H). However, with anilines 2b,c-H, only 1a underwent substitution, and substrates 1b,c were practically unreactive. The observed differences in reactivity are well accounted for within a mechanistic framework wherein oxidative activation of both the substrate and the secondary aniline is regarded as alternatively (or simultaneously) possible, depending on the redox characteristics of the reactants. For instance, it can be stated, beyond any reasonable doubt, that reactions of 1a with 2b,c-H proceed via nucleophilic attack of the latter on 1a+., and that the reaction of 1a-c with 2d-H must involve the diphenylamino radical 2d·.

ON THE ESR IDENTIFICATION OF PARAMAGNETIC SPECIES OBSERVED DURING SET OXIDATION OF N,N-DIMETHYL-p-ANISIDINE

Ciminale, F.,Curci, R.,Portacci, M.,Troisi, L.

, p. 2463 - 2466 (2007/10/02)

During SET oxidation of the title compound, N,N,N'-trimethyl-N'-(4-methoxyphenyl)-1,4-phenylendiamine radical cation was detected by e.s.r.; this derives from an oxidatively activated nucleophilic substitution on N,N-dimethyl-p-anisidine.Revised e.s.r. parameters for N,N-dimethyl-p-anisidinium radical are also reported.

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