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210303-05-2

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210303-05-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 210303-05-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,3,0 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 210303-05:
(8*2)+(7*1)+(6*0)+(5*3)+(4*0)+(3*3)+(2*0)+(1*5)=52
52 % 10 = 2
So 210303-05-2 is a valid CAS Registry Number.

210303-05-2Downstream Products

210303-05-2Relevant articles and documents

Synthesis of (E)-3-Alkylideneindolin-2-ones by an Iron-Catalyzed Aerobic Oxidative Condensation of Csp3–H Bonds of Oxindoles and Benzylamines

Gopalaiah, Kovuru,Tiwari, Ankit

, p. 7229 - 7237 (2020/12/01)

A novel synthetic route for the construction of (E)-3-alkylideneindolin-2-ones through iron-catalyzed aerobic oxidative condensation of oxindoles with benzylamines has been developed. This oxidative reaction involves a sequence of C–H activation, amine self-condensation, nucleophilic addition, and C–C double bond formation. The synthetic importance of this protocol has been demonstrated by preparing tyrosine kinase inhibitors, anticonvulsant and antitumor agents, and other valuable 3-alkylideneindolin-2-one derivatives. Key intermediates are isolated and a plausible mechanistic pathway for the reaction has been discussed.

Oxindole synthesis by palladium-catalysed aromatic C-H alkenylation

Ueda, Satoshi,Okada, Takahiro,Nagasawa, Hideko

supporting information; experimental part, p. 2462 - 2464 (2010/08/13)

A strategy involving palladium-catalysed aromatic C-H functionalisation/ intramolecular alkenylation provides a convenient and direct synthesis of 3-alkylideneoxindoles. In the presence of 5 mol% of PdCl2MeCN 2 and AgOCOCF3, a wide variety of N-cinnamoylanilines gave 3-alkylideneoxindoles in moderate to good yield. The Royal Society of Chemistry.

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