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218902-63-7

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218902-63-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 218902-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,9,0 and 2 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 218902-63:
(8*2)+(7*1)+(6*8)+(5*9)+(4*0)+(3*2)+(2*6)+(1*3)=137
137 % 10 = 7
So 218902-63-7 is a valid CAS Registry Number.

218902-63-7Relevant articles and documents

Electrochemically modified Corey-Fuchs reaction for the synthesis of arylalkynes. the case of 2-(2,2-dibromovinyl)naphthalene

Pandolfi, Fabiana,Chiarotto, Isabella,Feroci, Marta

, p. 891 - 899 (2018)

The electrochemical reduction of 2-(2,2-dibromovinyl)naphthalene in a DMF solution (Pt cathode) yields selectively 2-ethynylnaphthalene or 2-(bromoethynyl)naphthalene in high yields, depending on the electrolysis conditions. In particular, by simply changing the working potential and the supporting electrolyte, the reaction can be directed towards the synthesis of the terminal alkyne (Et4NBF4) or the bromoalkyne (NaClO4). This study allowed to establish that 2-(bromoethynyl)naphthalene can be converted into 2-ethynylnaphthalene by cathodic reduction.

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