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682785-16-6

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682785-16-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 682785-16-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,2,7,8 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 682785-16:
(8*6)+(7*8)+(6*2)+(5*7)+(4*8)+(3*5)+(2*1)+(1*6)=206
206 % 10 = 6
So 682785-16-6 is a valid CAS Registry Number.

682785-16-6Relevant articles and documents

Intramolecular metal-free oxidative aryl-aryl coupling: An unusual hypervalent-iodine-mediated rearrangement of 2-substituted n-phenylbenzamides

Shang, Siyun,Zhang-Negrerie, Daisy,Du, Yunfei,Zhao, Kang

, p. 6216 - 6219 (2014/06/23)

Hypervalent-iodine-mediated oxidative coupling of the two aryl groups in either 2-acylamino-N-phenyl-benzamides or 2-hydroxy-N-phenylbenzamides, with concomitant insertion of the ortho-substituted N or O atom into the tether, has been described for the first time. This unusual metal-free rearrangement reaction involves an oxidative C(sp2)?C(sp2) aryl-aryl bond formation, cleavage of a C(sp2)?C(O) bond, and a lactamization/lactonization. Furthermore, unsymmetrical diaryl compounds can be easily obtained by removing the tether within the cyclized product.

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