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40961-11-3

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40961-11-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40961-11-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,9,6 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 40961-11:
(7*4)+(6*0)+(5*9)+(4*6)+(3*1)+(2*1)+(1*1)=103
103 % 10 = 3
So 40961-11-3 is a valid CAS Registry Number.

40961-11-3Relevant articles and documents

Sc(OTf)3-catalyzed dehydrogenative cyclization for synthesis of N-methylacridones

Li, Xi-An,Wang, Hong-Li,Yang, Shang-Dong

supporting information, p. 1794 - 1797 (2013/05/23)

A novel method has been developed for the synthesis of substituted N-methylacridones from 2-(N-methyl-N-phenylamino)benzaldehydes via dehydrogenative cyclization. This transformation involves two primary processes: the aldehyde first coordinates with Sc(OTf)3 and induces the aromatic electrophilic substitution (SEAr) reaction to form the active intermediate N-methyl-acridin-9-ol, which is then quickly oxidized in situ to afford the acridones. Furthermore, the procedure involved is both environmental friendly and atom efficient; H2O is the only byproduct in this reaction.

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