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403-84-9

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403-84-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 403-84-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,0 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 403-84:
(5*4)+(4*0)+(3*3)+(2*8)+(1*4)=49
49 % 10 = 9
So 403-84-9 is a valid CAS Registry Number.

403-84-9Downstream Products

403-84-9Relevant articles and documents

Nickel-Catalyzed Cross-Coupling of Aryl Redoxactive Esters with Aryl Zinc Reagents

Shih, Bo-Hao,Basha, R. Sidick,Lee, Chin Fa

, p. 8862 - 8866 (2019/09/30)

A nickel-catalyzed aryl-aroyloxyl C(sp2)-O radical cross-coupling reaction conducted using a redox active ester with aryl zinc reagent was developed. This method demonstrates a new disconnection approach for formation of aryl aryl esters. In the one-pot sequential process, the readily available aryl carboxylic acids can be converted into functionalized aryl aryl esters and heteroaryl esters. This protocol is amenable to the gram-scale synthesis. The present method has a wide substrate scope and high functional group tolerance.

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