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263247-50-3

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263247-50-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 263247-50-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,2,4 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 263247-50:
(8*2)+(7*6)+(6*3)+(5*2)+(4*4)+(3*7)+(2*5)+(1*0)=133
133 % 10 = 3
So 263247-50-3 is a valid CAS Registry Number.

263247-50-3Relevant articles and documents

One-Pot Synthesis of Enantioenriched β-Amino Secondary Amides via an Enantioselective [4+2] Cycloaddition Reaction of Vinyl Azides with N-Acyl Imines Catalyzed by a Chiral Br?nsted Acid

Chiba, Shunsuke,Kaga, Atsushi,Kikuchi, Jun,Nakanishi, Taishi,Terada, Masahiro

supporting information, (2020/06/25)

A catalytic enantioselective synthesis of β-amino secondary amides was achieved using vinyl azides as the enamine-type nucleophile and chiral N-Tf phosphoramide as the chiral Br?nsted acid catalyst through a five-step sequential transformation in one pot.

First asymmetric synthesis of a 6-alkoxy-5,6-dihydro-1,3-oxazine: A promising enantioselective route to β-amido aldehydes

Gizecki, Patricia,Dhal, Robert,Toupet, Loic,Dujardin, Gilles

, p. 585 - 588 (2007/10/03)

equation presented The 1,3-oxazine route to enantiopure β-amido aldehydes was investigated. Heterocycloaddition of the N-acyl imine 1 with (R)-O-vinylpantolactone provided the stable dihydroxazine 4c. High diastereocontrols were observed when using Yb(fod)3-catalyzed or SnCl4-mediated conditions, thus leading after quantitative hydrolysis to (R)-N-benzoyl-3-phenylpropanal with >98% ee.

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