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730970-91-9

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730970-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 730970-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,3,0,9,7 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 730970-91:
(8*7)+(7*3)+(6*0)+(5*9)+(4*7)+(3*0)+(2*9)+(1*1)=169
169 % 10 = 9
So 730970-91-9 is a valid CAS Registry Number.

730970-91-9Relevant 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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