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120226-55-3

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120226-55-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120226-55-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,2,2 and 6 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 120226-55:
(8*1)+(7*2)+(6*0)+(5*2)+(4*2)+(3*6)+(2*5)+(1*5)=73
73 % 10 = 3
So 120226-55-3 is a valid CAS Registry Number.

120226-55-3Relevant articles and documents

Palladium-Catalyzed β-Mesylation of Simple Amide via Primary sp3 C-H Activation

Zhao, Ren,Lu, Wenjun

, p. 1768 - 1771 (2017)

A β-mesylation of primary sp3 C-H bonds from simple amides with methanesulfonic anhydride (Ms2O) has been established successfully at 80 °C in a Pd(OAc)2 (catalyst)/K2S2O8 (oxidant)/CF3CH2OH (solvent) system. These amide substrates involve N-monosubstituted linear, branch, or cyclic alkanes, and electron-deficient benzyl compounds. The β-mesylated amide products can be converted easily to β-fluoroamides or β-lactams through inter- or intramolecular SN2 processes.

Kinetics and mechanism of aminolysis of phenyl acetates and phenyl trimethylacetates in dimethyl suldoxide

Koh, Han Joong,Kim, Seung Il,Lee, Byung Choon,Lee, Ikchoon

, p. 1353 - 1358 (2007/10/03)

Kinetic studies have been carried out on the reactions of phenyl acetates and phenyl trimethylacetates in dimethyl sulfoxide.The rate ratios between the two acyl compounds, and the positive sign and large magnitude of the cross-interaction constants, ρXZ, between substituents X in the nucleophile and Z in the leaving group are considered to favour the rate-limiting expulsion of aryl oxide from the tetrahedral intermediate T+/-.The aprotic solvent used makes the proposed mechanism with a cyclic transition state more attractive especially in view of the greater charge dispersion and assistance to leaving group departure provided in such a structure.

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