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62256-40-0

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62256-40-0 Usage

Synthesis Reference(s)

Journal of the American Chemical Society, 72, p. 4797, 1950 DOI: 10.1021/ja01166a128

Check Digit Verification of cas no

The CAS Registry Mumber 62256-40-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,2,2,5 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 62256-40:
(7*6)+(6*2)+(5*2)+(4*5)+(3*6)+(2*4)+(1*0)=110
110 % 10 = 0
So 62256-40-0 is a valid CAS Registry Number.

62256-40-0Relevant articles and documents

Metal-free oxidative coupling: Xanthone formation via direct annulation of 2-aryloxybenzaldehyde using tetrabutylammonium bromide as a promoter in aqueous medium

Rao, Honghua,Ma, Xinyi,Liu, Qianzi,Li, Zhongfeng,Cao, Shengli,Li, Chao-Jun

supporting information, p. 2191 - 2196 (2013/10/01)

A metal-free intramolecular annulation of 2-aryloxybenzaldehydes to xanthones is disclosed, which proceeds through the direct oxidative coupling of an aldehyde C-H bond and aromatic C-H bonds using tetrabutylammonium bromide (TBAB) as a promoter in aqueous medium. This strategy works smoothly in the presence of both electron-donating and electron-withdrawing groups, and displays good tolerance towards catalytically reactive substituents, thus promising further functionalizations of xanthone products.

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