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1332709-28-0

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1332709-28-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1332709-28-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,2,7,0 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1332709-28:
(9*1)+(8*3)+(7*3)+(6*2)+(5*7)+(4*0)+(3*9)+(2*2)+(1*8)=140
140 % 10 = 0
So 1332709-28-0 is a valid CAS Registry Number.

1332709-28-0Relevant articles and documents

Carbon-carbon bond-forming reactions of α-carbonyl carbocations: Exploration of a reversed-polarity equivalent of enolate chemistry

Lai, Ping-Shan,Dubland, Joshua A.,Sarwar, Mohammed G.,Chudzinski, Michael G.,Taylor, Mark S.

, p. 7586 - 7592 (2011/10/12)

Carbon-carbon bond-forming reactions of putative α-carbonyl carbocation intermediates generated by Lewis acid- or silver-promoted ionizations of toluenesulfonate or halide leaving groups are described. This under-exploited mode of reactivity represents an 'umpolung' of conventional enolate chemistry, and enables C-C bond construction in both intra- and intermolecular contexts. Attempts to develop diastereoselective variants of this process using chiral ester and oxazolidinone-based auxiliaries are discussed.

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