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52166-05-9

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52166-05-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52166-05-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,1,6 and 6 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 52166-05:
(7*5)+(6*2)+(5*1)+(4*6)+(3*6)+(2*0)+(1*5)=99
99 % 10 = 9
So 52166-05-9 is a valid CAS Registry Number.

52166-05-9Relevant articles and documents

Rhodium-catalyzed, highly enantioselective 1,2-addition of aryl boronic acids to α-ketoesters and α-diketones using simple, chiral sulfur-olefin ligands

Zhu, Ting-Shun,Jin, Shen-Shuang,Xu, Ming-Hua

supporting information; experimental part, p. 780 - 783 (2012/02/06)

Simply the best: The title reaction has been achieved by asymmetric rhodium catalysis employing an extremely simple, chiral N-(sulfinyl)cinnamylamine ligand. A variety of highly enantioenriched, tertiary α-hydroxy carbonyl derivatives were easily accessed

Asymmetric Addition of Organometallics to Chiral Ketooxazolines. Preparation of Enantiomerically Enriched α-Hydroxy Acids

Meyers, A. I.,Slade, Joel

, p. 2785 - 2791 (2007/10/02)

Addition of Grignard and organolithium reagents to chiral α-ketooxazolines results in α-substituted α-hydroxyoxazoline derivatives which on hydrolytic removal of the chiral auxiliary groups give rise to α-substituted α-hydroxy acids in 30-87 percent enantiomeric excess (ee).Studies on the various parameters (solvents, temperature, substituents) were undertaken to reach optimum asymmetric induction.

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