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22731-27-7

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22731-27-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22731-27-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,3 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22731-27:
(7*2)+(6*2)+(5*7)+(4*3)+(3*1)+(2*2)+(1*7)=87
87 % 10 = 7
So 22731-27-7 is a valid CAS Registry Number.

22731-27-7Relevant articles and documents

Denitrogenative Suzuki and carbonylative Suzuki coupling reactions of benzotriazoles with boronic acids

Wang, Yuanhao,Wu, Yunfei,Li, Yuanhe,Tang, Yefeng

, p. 3852 - 3857 (2017/07/11)

Unprecedented palladium-catalyzed denitrogenative Suzuki and carbonylative Suzuki coupling reactions of benzotriazoles with boronic acids have been realized, which afforded structurally diverse ortho-amino-substituted biaryl and biaryl ketone derivatives. The key to this success is due to the development of a rationally designed strategy to achieve the ring opening of benzotriazoles with a synergistic activating-stabilizing effect, which enables the in situ generation of the corresponding ortho-amino-arenediazonium species. The present work opens up a new avenue to utilize benzotriazoles as synthetic equivalents of ortho-amino-arenediazoniums, which otherwise could not be directly accessed by existing synthetic methods.

Antiinflammatory fluoroalkanesulfonanilides. 3. Other fluoroalkanesulfonamido diaryl systems

Moore,Harrington,Swingle

, p. 386 - 391 (2007/10/05)

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