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69557-52-4

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69557-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69557-52-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,5,5 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 69557-52:
(7*6)+(6*9)+(5*5)+(4*5)+(3*7)+(2*5)+(1*2)=174
174 % 10 = 4
So 69557-52-4 is a valid CAS Registry Number.

69557-52-4Downstream Products

69557-52-4Relevant articles and documents

Selective Cross-Dehydrogenative C(sp3)-H Arylation with Arenes

Hao, Hong-Yan,Mao, Yang-Jie,Xu, Zhen-Yuan,Lou, Shao-Jie,Xu, Dan-Qian

, p. 2396 - 2402 (2020/03/13)

Selective C(sp3)-C(sp2) bond construction is of central interest in chemical synthesis. Despite the success of classic cross-coupling reactions, the cross-dehydrogenative coupling between inert C(sp3)-H and C(sp2)-H bonds represents an attractive alternative toward new C(sp3)-C(sp2) bonds. Herein, we establish a selective inter-and intramolecular C(sp3)-H arylation of alcohols with nondirected arenes that thereby provides a general pathway to access a wide range of β-arylated alcohols, including tetrahydronaphthalen-2-ols and benzopyran-3-ols, with high to excellent chemo-and regioselectivity.

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