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15863-52-2

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15863-52-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15863-52-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,8,6 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 15863-52:
(7*1)+(6*5)+(5*8)+(4*6)+(3*3)+(2*5)+(1*2)=122
122 % 10 = 2
So 15863-52-2 is a valid CAS Registry Number.

15863-52-2Relevant articles and documents

Synthesis of 4-nitrophenyl sulfones and application in the modified Julia olefination

Mirk, Daniela,Grassot, Jean-Marie,Zhu, Jieping

, p. 1255 - 1259 (2007/10/03)

4-Nitrophenyl (NP) sulfones have been successfully employed in the modified Julia olefination reaction with carbonyl compounds. The olefination reaction proceeds through a sequence of aldol addition, Smiles rearrangement, and elimination. The sulfones are easily prepared in high yields in a two-step sequence starting from inexpensive commercially available para- fluoronitrobenzenes via nucleophilic aromatic substitution by a mercaptane and subsequent oxidation under standard conditions. The modified Julia reaction between NP sulfones and a wide variety of aromatic aldehydes affords the corresponding styrenes, stilbenes and cinnamate derivatives in yields up to 97% and good stereoselectivities. A mechanistic rationale is advanced to explain the observed results. Georg Thieme Verlag Stuttgart.

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