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84508-72-5

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84508-72-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84508-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,5,0 and 8 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 84508-72:
(7*8)+(6*4)+(5*5)+(4*0)+(3*8)+(2*7)+(1*2)=145
145 % 10 = 5
So 84508-72-5 is a valid CAS Registry Number.

84508-72-5Relevant articles and documents

Lewis Acid Catalyzed Cyclization Reactions of Ethenetricarboxylates via Intramolecular Hydride Transfer

Yamazaki, Shoko,Naito, Taku,Niina, Mamiko,Kakiuchi, Kiyomi

, p. 6748 - 6763 (2017/07/15)

Catalytic cyclization of amides of ethenetricarboxylate bearing ether and acetal groups has been examined. The reaction of the amides bearing cyclic ether and acetal groups in the presence of Lewis acid such as Sc(OTf)3 gave spirocyclic piperidine derivatives as major products. The cyclized products may be formed via intramolecular hydride transfer. The reaction mechanism was examined by the DFT calculations. The scope and limitations of the hydride transfer/cyclization reactions of amides of ethenetricarboxylates was investigated, and morpholine formation by intramolecular oxy-Michael addition was also found.

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