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19740-01-3

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19740-01-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19740-01-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,4 and 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19740-01:
(7*1)+(6*9)+(5*7)+(4*4)+(3*0)+(2*0)+(1*1)=113
113 % 10 = 3
So 19740-01-3 is a valid CAS Registry Number.

19740-01-3Relevant articles and documents

Ni-Catalyzed β-Alkylation of Cyclopropanol-Derived Homoenolates

Mills, L. Reginald,Zhou, Cuihan,Fung, Emily,Rousseaux, Sophie A. L.

, p. 8805 - 8809 (2019/11/03)

Metal homoenolates are valuable synthetic intermediates which provide access to β-functionalized ketones. In this report, we disclose a Ni-catalyzed β-alkylation reaction of cyclopropanol-derived homoenolates using redox-active N-hydroxyphthalimide (NHPI) esters as the alkylating reagents. The reaction is compatible with 1°, 2°, and 3° NHPI esters. Mechanistic studies imply radical activation of the NHPI ester and 2e β-carbon elimination occurring on the cyclopropanol.

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