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83266-41-5

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83266-41-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83266-41-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,2,6 and 6 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83266-41:
(7*8)+(6*3)+(5*2)+(4*6)+(3*6)+(2*4)+(1*1)=135
135 % 10 = 5
So 83266-41-5 is a valid CAS Registry Number.

83266-41-5Relevant articles and documents

I2-Promoted Intramolecular Oxidative Cyclization of Butenyl Anilines: A Facile Route to Benzo[b]azepines

An, Zhenyu,Ren, Yi,Liu, Yafeng,Yan, Rulong

, p. 2614 - 2617 (2021/08/06)

A metal-free approach for the synthesis of seven-membered N-heterocycles has been developed by the I2-promoted intramolecular cross-coupling/annulation of butenyl anilines. This cyclization reaction involves C?H activation and C?C bond formation and exhibits good functional group tolerance. A series of benzo[b]azepine derivatives are obtained in moderate to good yields.

A convenient synthesis of novel 1,3,4-triaryl-3,4-dihydropyrimidin-2(1H)- ones by cyclization of aromatic isocyanates with β-arylamino-1- phenylpropan-1-ones

Xue, Na,Lu, Xiuyang,Hu, Yongzhou

, p. 1095 - 1098 (2008/12/20)

(Chemical Equation Presented) A simple one-step method for preparation of novel 1,3,4-triaryl-3,4-dihydropyrimidin-2(1H)-ones has been developed by reaction of aromatic isocyanates with β-arylamino-1-phenylpropan-1-ones in refluxing toluene in the presence of KHSO4 and HCl.

Reaction of 3-benzoyl-1-methyl-4-phenyl-γ-piperidol with arylamines and arylhydrazines. Synthesis of 3-arylamino-1-oxo-1-phenylpropanes and 1,3 diarylpyrazoles and their fragmentation under electron impact

Volkov,Kutyakov,Levov,Polyakova,Anh, Le Tuan,Soldatova,Terentiev,Soldatenkov

, p. 445 - 453 (2008/12/20)

Upon heating in the presence of arylamines 3-benzoyl-4-hydroxy-1-methyl-4- phenylpiperidine decyclizes via a retroaldol type reaction with subsequent transamination of the intermediate Mannich base to give 3-arylamino-1-oxo-1- phenylpropanes. In the case of the use of arylhydrazines this γ-piperidol recyclizes to give 1,3-diarylpyrazoles and their 4,5-dihydro derivatives. The mass spectroscopic behavior of a series of 3-arylamino-substituted 1-phenylpropanones has been studied.

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