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108893-53-4

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108893-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108893-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,8,9 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 108893-53:
(8*1)+(7*0)+(6*8)+(5*8)+(4*9)+(3*3)+(2*5)+(1*3)=154
154 % 10 = 4
So 108893-53-4 is a valid CAS Registry Number.

108893-53-4Relevant articles and documents

Aroylation of Carbanions Derived from N-(Diphenylmethyl)arylmethanimines. A Synthesis of 4-Aroyloxy-2-azabuta-1,3-dienes

Armesto, Diego,Ortiz, Maria J.,Perez-Ossorio, Rafael

, p. 2021 - 2026 (2007/10/02)

The acylation of carbanions derived from N-(diphenylmethyl)arylmethanimines using aroyl chlorides, allows the preparation of a new type of substituted 2-azabuta-1,3-dienes in which the imino group is conjugated with an enol ester.The reaction is quite general and facilitates the preparation of a wide range of 2-azadienes with electron-donating and electron-withdrawing groups on the phenyl rings.The site selectivity for the attack of the electrophile on the aza-allyl anion can be controlled by the substituents on the carbanion and on the hardness of the electrophile.

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