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1027897-51-3

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1027897-51-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1027897-51-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,7,8,9 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1027897-51:
(9*1)+(8*0)+(7*2)+(6*7)+(5*8)+(4*9)+(3*7)+(2*5)+(1*1)=173
173 % 10 = 3
So 1027897-51-3 is a valid CAS Registry Number.

1027897-51-3Relevant articles and documents

and Annulation Reactions of α-(Phenylthio) Dicarbonyl Electrophiles with Bis(trimethylsilyl) Enol Ethers: Synthesis of Highly Functionalized Medium Ring Cycles

Molander, Gary A.,Eastwood, Paul R.

, p. 8382 - 8393 (1995)

The and annulations of bis(trimethylsilyl) enol ethers with 1,4- and 1,5-dicarbonyl electrophiles bearing α-phenylthio substituents leads to the formation of bicyclic and ethers with good regiochemical and stereochemical control.Subsequent oxidation of the phenylthio moiety followed by reduction with SmI2 constitutes a high-yielding and regioselective process for cleavage of the bridging ether linkage.The overal strategy provides a synthetic pathway for the synthesis of highly functionalized medium ring carbocycles.

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