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200860-07-7

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200860-07-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200860-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,8,6 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 200860-07:
(8*2)+(7*0)+(6*0)+(5*8)+(4*6)+(3*0)+(2*0)+(1*7)=87
87 % 10 = 7
So 200860-07-7 is a valid CAS Registry Number.

200860-07-7Relevant articles and documents

Application of an S → O Allylic Transposition in the Context of a Bridgehead Olefinic System. New Opportunities for the Structural Modification of Bicyclo[6.2.1]undecanes via Transannular Ring Closure

Johnston, Jeffrey N.,Tsui, Hon-Chung,Paquette, Leo A.

, p. 129 - 136 (2007/10/03)

A practical route is described for the preparation of allylic sulfide 8, whose double bond resides at a bridgehead site. Following hydride reduction of the ketone carbonyl and sulfoxidation, exposure to trifluoroacetic anhydride results in the operation of an intermolecular S → O allylic transposition. This central step leads to 14a, an intermediate useful for probing the consequences associated with epoxidation of its cis-cyclononene double bond. A total of three different transannular cyclizations are described in order to demonstrate the ease with which ring closures can operate in a medium-ring setting of this type. Represented are transformations that generate tetrahydrofuran, oxetane, and cyclopropane subunits. The kinetic biases favoring these transformations are highlighted.

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