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136573-59-6

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136573-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136573-59-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,5,7 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 136573-59:
(8*1)+(7*3)+(6*6)+(5*5)+(4*7)+(3*3)+(2*5)+(1*9)=146
146 % 10 = 6
So 136573-59-6 is a valid CAS Registry Number.

136573-59-6Relevant articles and documents

Stereocontrolled intramolecular aziridination of glycate: Ready access to aminoglycosides and mechanistic insights from DFT studies

Lorpitthaya, Rujee,Xie, Zhi-Zhong,Kuo, Jer-Lai,Liu, Xue-Wei

scheme or table, p. 1561 - 1570 (2009/04/06)

Stereocontrolled intramolecular aziridination of the glycal-derived sulfamates offers a highly efficient strategy to divergently prepare aminoglycosides. Rhodium-catalyzed nitrogen-atom transfer to C=C bonds formed semistable aziridines, which were subjected to various nucleophiles (C, O, S, and N) to give cyclic sulfamate-containing aminosugar derivatives selectively. The second nucleophilic displacement of sulfonyloxy moieties of [1,2,3]-oxathiazepane-2,2-dioxides allows straightforward access to aminoglycosides with selective α- or β-linkages. This approach is operationally simple, complements existing methods, and is a versatile protocol for the synthesis of polyfunctionalized amino sugars. In addition, the mechanism of the rhodium-catalyzed intramolecular aziridination of glycals and its ring-opening reaction was extensively studied by using DFT calculations.

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