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159216-65-6

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159216-65-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159216-65-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,2,1 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 159216-65:
(8*1)+(7*5)+(6*9)+(5*2)+(4*1)+(3*6)+(2*6)+(1*5)=146
146 % 10 = 6
So 159216-65-6 is a valid CAS Registry Number.

159216-65-6Relevant articles and documents

FeCl3·6H2O/acetaldehyde, a versatile system for the deprotection of ketals and acetals via a transacetalization process

Schiavo, Lucie,Jeanmart, Lo?c,Lanners, Steve,Choppin, Sabine,Hanquet, Gilles

, p. 1421 - 1424 (2017)

Mild and efficient catalytic deprotection of ketals/acetals mediated by FeCl3·6H2O/acetaldehyde has been described in this paper. The versatility and high chemoselectivity of the iron(iii)/aldehyde system are demonstrated by a large scope of examples. Deprotected ketones/aldehydes are nearly quantitatively isolated after filtration over a pad of silica gel followed by evaporation of volatile by-products.

Enantioselective deprotonation of protected 4-hydroxycyclohexanones

Majewski, Marek,Mackinnon, John

, p. 1699 - 1704 (2007/10/02)

A series of derivatives of 4-hydroxycyclohexanone (1a-g) with the hydroxy group protected as a silyl ether (1a,b), ether (1d,g), an acetal (1c), or an ester (1e,f) were deprotonated with chiral, optically pure, lithium amides 3-9. The resulting non-racemic enolates were trapped as enol acetates. The enantioselectivity of deprotonation was up to 74percent ee.

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