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83266-40-4

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83266-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83266-40-4 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 0 respectively.
Calculate Digit Verification of CAS Registry Number 83266-40:
(7*8)+(6*3)+(5*2)+(4*6)+(3*6)+(2*4)+(1*0)=134
134 % 10 = 4
So 83266-40-4 is a valid CAS Registry Number.

83266-40-4Relevant 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.

Synthesis and Reactions of 3,6-Diaryl-3,4-dihydro-1,3,2-oxazaphosphorin-2-oxides

Tilak, B. D.,Gogte, V.N.,Modak, A.S.

, p. 414 - 415 (2007/10/02)

Aryl β-arylaminoethyl ketones (1), when reacted with phosphorus oxychloride followed by treatment with triethylamine, afford 3,6-diaryl-2-chloro-3,4-dihydro-1,3,2-oxazaphosphorin-2-oxides (3a-u), a hitherto unreported ring system.The oxazaphosphorin (3q), viz. 2-chloro-3-m-anisyl-6-phenyl-3,4-dihydro-1,3,2-oxazaphosphorin, is converted into 7-methoxy-4-phenylquinoline on keeping.This transformation is specific to 3q since other oxazaphosphorins fail to give the quinoline derivative.

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