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1403879-40-2

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1403879-40-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1403879-40-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,8,7 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1403879-40:
(9*1)+(8*4)+(7*0)+(6*3)+(5*8)+(4*7)+(3*9)+(2*4)+(1*0)=162
162 % 10 = 2
So 1403879-40-2 is a valid CAS Registry Number.

1403879-40-2Downstream Products

1403879-40-2Relevant articles and documents

Isoselenazolones as catalysts for the activation of bromine: Bromolactonization of alkenoic acids and oxidation of alcohols

Balkrishna, Shah Jaimin,Prasad, Ch Durga,Panini, Piyush,Chopra, Deepak,Kumar, Sangit,Detty, Michael R.

, p. 9541 - 9552,12 (2012/12/12)

Isoselenazolones were synthesized by a copper-catalyzed Se-N bond forming reaction between 2-halobenzamides and selenium powder. The catalytic activity of the various isoselenazolones was studied in the bromolactonization of pent-4-enoic acid. Isoselenazolone 9 was studied as a catalyst in several reactions: the bromolactonization of a series of alkenoic acids with bromine or N-bromosuccinimide (NBS) in the presence of potassium carbonate as base, the bromoesterification of a series of alkenes using NBS and a variety of carboxylic acids, and the oxidation of secondary alcohols to ketones using bromine as an oxidizing reagent. Mechanistic details of the isoselenazolone-catalyzed bromination reaction were revealed by 77Se NMR spectroscopic and ES-MS studies. The oxidative addition of bromine to the isoselenazolone gives the isoselenazolone(IV) dibromide, which could be responsible for the activation of bromine under the reaction conditions. Steric effects from an N-phenylethyl group on the amide of the isoselenazolone and electron-withdrawing fluoro substituents on the benzo fused-ring of the isoselenazolone appear to enhance the stability of the isoselenazolone as a catalyst for the bromination reaction.

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