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52190-13-3

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52190-13-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52190-13-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,1,9 and 0 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 52190-13:
(7*5)+(6*2)+(5*1)+(4*9)+(3*0)+(2*1)+(1*3)=93
93 % 10 = 3
So 52190-13-3 is a valid CAS Registry Number.

52190-13-3Relevant articles and documents

Electrochemical dehydrogenative cyclization of 1,3-dicarbonyl compounds

Wu, Zheng-Jian,Li, Shi-Rui,Long, Hao,Xu, Hai-Chao

, p. 4601 - 4604 (2018)

The intramolecular C(sp3)-H/C(sp2)-H cross-coupling of 1,3-dicarbonyl compounds has been achieved through Cp2Fe-catalyzed electrochemical oxidation. The key to the success of these dehydrogenative cyclization reactions is

A copper(II)-mediated radical cross-dehydrogenative coupling/sulfinic acid elimination approach to 2-quinolones

Gorman, Ryan M.,Hurst, Timothy E.,Petersen, Wade F.,Taylor, Richard J.K.

, (2019/11/19)

A new cyclisation procedure to prepare 4-carboxy-quinolin-2-ones via a one-pot Cu(II)-mediated radical cross-dehydrogenative coupling/sulfinic acid elimination of linear anilides is described. Extensions to more complex substrates are also reported as are

Transition-Metal-Free Fluoroarylation of Diazoacetamides: A Complementary Approach to 3-Fluorooxindoles

Dong, Kuiyong,Yan, Bin,Chang, Sailan,Chi, Yongjian,Qiu, Lihua,Xu, Xinfang

, p. 6887 - 6892 (2016/08/16)

An efficient transition-metal-free fluoroarylation reaction of N-aryl diazoacetamides with NFSI (N-fluorobenzenesulfonimide) is described. This reaction directly provides 3-fluorooxindole derivatives in yields of 67-93% with high selectivity via a carbene

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