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56078-05-8

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56078-05-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56078-05-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,0,7 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 56078-05:
(7*5)+(6*6)+(5*0)+(4*7)+(3*8)+(2*0)+(1*5)=128
128 % 10 = 8
So 56078-05-8 is a valid CAS Registry Number.

56078-05-8Relevant articles and documents

Synthesis of functionalized γ-lactone via Sakurai exo -cyclization/rearrangement of 3,3-bis(silyl) enol ester with a tethered acetal

Yin, Zhiping,Liu, Zengjin,Huang, Zhenggang,Chu, Yang,Chu, Zhiwen,Hu, Jia,Gao, Lu,Song, Zhenlei

, p. 1553 - 1556 (2015/03/30)

An efficient synthesis of functionalized γ-lactones has been developed involving Sakurai exo-cyclization/rearrangement of 3,3-bis(silyl) enol esters with a tethered acetal. While the steric and electronic effects of geminal bis(silane) favor the desired Sakurai pathway, the methoxy species formed in the deprotection step also facilitates both cyclization and rearrangement. The synthetic value of this approach has been demonstrated by efficiently transforming the E-vinylsilane into enyne and the γ-lactone moiety into multisubstituted THF.

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