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53973-79-8

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53973-79-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53973-79-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,9,7 and 3 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 53973-79:
(7*5)+(6*3)+(5*9)+(4*7)+(3*3)+(2*7)+(1*9)=158
158 % 10 = 8
So 53973-79-8 is a valid CAS Registry Number.

53973-79-8Downstream Products

53973-79-8Relevant articles and documents

C-H bond sulfonylation of anilines with the insertion of sulfur dioxide under metal-free conditions

Zhou, Kaida,Zhang, Jun,Lai, Lifang,Cheng, Jiang,Sun, Jiangtao,Wu, Jie

, p. 7459 - 7462 (2018)

C-H bond sulfonylation of anilines with the insertion of sulfur dioxide under metal-free conditions is described. 2-Sulfonylanilines are generated in moderate to good yields through a three-component reaction of anilines, DABCO·(SO2)2, and aryldiazonium tetrafluoroborates under mild conditions. No metal catalysts or additives are needed for this transformation. This direct C-H functionalization is highly efficient, and broad functional group tolerance is observed. A radical process is believed to be involved. In the reaction process, the arylsulfonyl radical and the tertiary amine radical cation generated in situ from DABCO·(SO2)2, and aryldiazonium tetrafluoroborate are the key intermediates. Additionally, the tertiary amine radical cation acts as the electron carrier through a single electron transfer process.

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