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20781-61-7

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20781-61-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20781-61-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,8 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20781-61:
(7*2)+(6*0)+(5*7)+(4*8)+(3*1)+(2*6)+(1*1)=97
97 % 10 = 7
So 20781-61-7 is a valid CAS Registry Number.

20781-61-7Relevant articles and documents

Synthesis of aryl fluorides from potassium aryltrifluoroborates and selectfluor mediated by iron(III) chloride

Dubbaka, Srinivas Reddy,Gadde, Satyanarayana,Narreddula, Venkateswara Reddy

, p. 854 - 860 (2015)

The synthesis of fluorinated arenes by the iron-mediated fluorination of potassium aryltrifluoroborates with Selectfluor and potassium fluoride is described. The fluorination reaction uses commercially available reagents and without requiring the addition

Decarboxylative etherification of aromatic carboxylic acids

Bhadra, Sukalyan,Dzik, Wojciech I.,Goossen, Lukas J.

, p. 9938 - 9941 (2012/08/08)

Decarboxylative Chan-Evans-Lam-type couplings are presented as a new strategy for the regiospecific construction of diaryl and alkyl aryl ethers starting from easily available aromatic carboxylic acids. They allow converting various aromatic carboxylate salts into the corresponding aryl ethers by reaction with alkyl orthosilicates or aryl borates, under aerobic conditions in the presence of silver carbonate as the decarboxylation catalyst and copper acetate as the cross-coupling catalyst.

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