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200114-10-9

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200114-10-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200114-10-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,1,1 and 4 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 200114-10:
(8*2)+(7*0)+(6*0)+(5*1)+(4*1)+(3*4)+(2*1)+(1*0)=39
39 % 10 = 9
So 200114-10-9 is a valid CAS Registry Number.

200114-10-9Relevant articles and documents

Enantioselective Synthesis of Chiral Piperidines via the Stepwise Dearomatization/Borylation of Pyridines

Kubota, Koji,Watanabe, Yuta,Hayama, Keiichi,Ito, Hajime

, p. 4338 - 4341 (2016/05/09)

We have developed a novel approach for the synthesis of enantioenriched 3-boryl-tetrahydropyridines via the Cu(I)-catalyzed regio-, diastereo-, and enantioselective protoborylation of 1,2-dihydropyridines, which were obtained by the partial reduction of the pyridine derivatives. This dearomatization/enantioselective borylation stepwise strategy provides facile access to chiral piperidines together with the stereospecific transformation of a stereogenic C-B bond from readily available starting materials. Furthermore, the utility of this method is demonstrated for the concise synthesis of the antidepressant drug (-)-paroxetine. A theoretical study of the reaction mechanism is also described.

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