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55439-11-7

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55439-11-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55439-11-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,4,3 and 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55439-11:
(7*5)+(6*5)+(5*4)+(4*3)+(3*9)+(2*1)+(1*1)=127
127 % 10 = 7
So 55439-11-7 is a valid CAS Registry Number.

55439-11-7Downstream Products

55439-11-7Relevant articles and documents

Highly Diastereo- And Enantioselective Ir-Catalyzed Hydrogenation of 2,3-Disubstituted Quinolines with Structurally Fine-Tuned Phosphine-Phosphoramidite Ligands

Hu, Xin-Hu,Hu, Xiang-Ping

, p. 10003 - 10006 (2019/12/24)

A highly diastereo- and enantioselective Ir-catalyzed hydrogenation of unfunctionalized 2,3-disubstituted quinolines, especially 3-alkyl-2-arylquinolines, has been realized. The success of this hydrogenation is ascribed to the use of a structurally fine-tuned chiral phosphine-phosphoramidite ligand with a (Sa)-3,3′-dimethyl H8-naphthyl moiety and (Rc)-1-phenylethylamine backbone. The hydrogenation displayed broad functional group tolerance, thus furnishing a wide range of optically active 2,3-disubstituted tetrahydroquinolines in up to 96% ee and with perfect cis-diastereoselectivity.

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