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1802571-63-6

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1802571-63-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1802571-63-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,0,2,5,7 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1802571-63:
(9*1)+(8*8)+(7*0)+(6*2)+(5*5)+(4*7)+(3*1)+(2*6)+(1*3)=156
156 % 10 = 6
So 1802571-63-6 is a valid CAS Registry Number.

1802571-63-6Relevant articles and documents

Synthesis of (Z)-3-[amino(phenyl)methylidene]-1,3-dihydro-2Hindol-2-ones using an Eschenmoser coupling reaction

Marek, Luká?,Kolman, Luká?,Váňa, Ji?í,Svoboda, Jan,Hanusek, Ji?í

supporting information, p. 527 - 539 (2021/03/31)

A highly modular method for the synthesis of (Z)-3-[amino(phenyl/methyl)methylidene]-1,3-dihydro-2H-indol-2-ones starting from easily available 3-bromooxindoles or (2-oxoindolin-3-yl)triflate and thioacetamides or thiobenzamides is described. A series of 49 compounds, several of which have previously been shown to possess significant tyrosin kinase inhibiting activity, was prepared in yields varying mostly from 70 to 97% and always surpassing those obtained by other published methods. The method includes an Eschenmoser coupling reaction, which is very feasible (even without using a thiophile except tertiary amides) and scalable. The (Z)configuration of all products was confirmed by NMR techniques.

Diastereoselective Palladium Catalyzed Carbenylative Amination of ortho-Vinylanilines with 3-Diazoindolin-2-ones

Reddy, Angula Chandra Shekar,Reddy, Palagulla Maheswar,Anbarasan, Pazhamalai

supporting information, p. 801 - 806 (2020/01/25)

A diastereoselective palladium catalyzed carbenylative amination of ortho-vinylaniline with 3-diazoindolines-2-one have been accomplished for the synthesis of various tetrasubstituted indoline fused spirooxindole with good yields and diastereoselectivity. Notable features of the method include construction of two contiguous tetrasubstituted carbon stereocenters via C?N and C?C bond formation in single operation, wide functional group tolerance and high atom and step economy. Importantly, the present reaction was also extended to one-pot conversion of tosylhydrazones and ortho-vinylanilines to spirooxindole derivatives. (Figure presented.).

Efficient Synthesis of Spirooxindole Pyrrolones by a Rhodium(III)-Catalyzed C?H Activation/Carbene Insertion/Lossen Rearrangement Sequence

Ma, Biao,Wu, Peng,Wang, Xing,Wang, Zhengyu,Lin, Hai-Xia,Dai, Hui-Xiong

supporting information, p. 13335 - 13339 (2019/08/20)

A rhodium(III)-catalyzed domino annulation of simple olefins with diazo oxindoles to give spirooxindole pyrrolone products is described. This reaction can be formally viewed as the result of an anomalous tandem C?H activation, carbene insertion, Lossen rearrangement, and a nucleophilic addition process. The potential utility of this reaction was further demonstrated by the late-stage diversification of drug molecules.

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