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19578-72-4

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19578-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19578-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,7 and 8 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19578-72:
(7*1)+(6*9)+(5*5)+(4*7)+(3*8)+(2*7)+(1*2)=154
154 % 10 = 4
So 19578-72-4 is a valid CAS Registry Number.

19578-72-4Relevant articles and documents

Metal-Free C-O Bond Functionalization: Catalytic Intramolecular and Intermolecular Benzylation of Arenes

Bering, Luis,Jeyakumar, Kirujan,Antonchick, Andrey P.

supporting information, p. 3911 - 3914 (2018/07/22)

A catalytic, metal-free intramolecular rearrangement of benzyl phenyl ethers using nitrosonium salt as a catalyst is described. The optimized reaction conditions enabled a catalytic and metal-free Friedel-Crafts alkylation reaction with benzylic alcohols, producing water as the stoichiometric byproduct. A comprehensive scope (>50 examples) for both approaches and application in drug synthesis were demonstrated. Mechanistic studies suggest a Lewis acid-based mechanism for the metal-free Friedel-Crafts reaction.

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