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816468-37-8

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816468-37-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 816468-37-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,6,4,6 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 816468-37:
(8*8)+(7*1)+(6*6)+(5*4)+(4*6)+(3*8)+(2*3)+(1*7)=188
188 % 10 = 8
So 816468-37-8 is a valid CAS Registry Number.

816468-37-8Downstream Products

816468-37-8Relevant articles and documents

Anti-infective compounds

-

, (2011/08/04)

The present invention relates to small molecule compounds and their use in the treatment of bacterial infections, in particular Tuberculosis.

Palladium-mediated arylation of 3-aminopiperidines and 3-aminopyrrolidines

Jean, Ludovic,Rouden, Jacques,Maddaluno, Jacques,Lasne, Marie-Claire

, p. 8893 - 8902 (2007/10/03)

This paper describes the palladium-catalyzed arylation of 1-substituted 3-aminopyrrolidines or piperidines. Palladium(0) (1-2 mol %) in conjunction with "Buchwald's ligand" [2-(dimethylamino)-2′- (dicyclohexylphosphine)biphenyll was shown to be the catalyst of choice for the coupling with aryl bromides or chlorides. When bromobenzene was used, a strong temperature effect was noticed. Whereas no reaction occurred at 100 °C, yields higher than 85% were obtained at 130 °C for each substrate. Such an effect was not observed when diphosphines were used. Whereas Xantphos and, to a lesser extent BINAP, were moderately efficient in the coupling of all diamines, the palladium-mediated arylation in the presence of monophosphines was strongly dependent on the substrate. The results suggest the participation of both nitrogens of the aminoheterocycle in the reactive intermediate. This participation could also account for the highly selective arylation of the endocyclic nitrogen of unsubstituted 3-aminopyrrolidine or piperidine. Optimal conditions were found for the arylation using 2- or 4-substituted electron-poor or enriched aryl halides.

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