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5729-92-0

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5729-92-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5729-92-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,2 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 5729-92:
(6*5)+(5*7)+(4*2)+(3*9)+(2*9)+(1*2)=120
120 % 10 = 0
So 5729-92-0 is a valid CAS Registry Number.

5729-92-0Relevant articles and documents

Diastereo and enantioselective synthesis of 1,2-diols promoted by electrophilic selenium reagents

Santi,Tiecco,Testaferri,Tomassini,Santoro,Bizzoca

experimental part, p. 956 - 960 (2009/04/06)

Here we report the first example in which the phenylseleno group is directly substituted by a hydroxy function. The reaction is promoted by the PhSeOSO3H generated "in situ" by oxidation of (PhSe)2 with (NH4)2S2O8 at reflux in a 3:1 mixture of MeCN-H2O. I

Ruthenium Tetroxide Oxidation of Alkenes. A More Complete Picture

Albarella, Laura,Piccialli, Vincenzo,Sica, Donato,Smaldone, Dina

, p. 2442 - 2456 (2007/10/03)

The ruthenium tetroxide oxidation of some linear and cyclic alkenes, representatives of five substitution patterns, has been performed in acetone-water (5:1) solution at -70 deg C using stoichiometric ammounts of the oxidant.The main reaction products are 1,2-diols and/or α-ketols depending on the nature of the substrate little amounts of scission products, aldehydes and/or carboxylic acids, are also obtained.Generally 1,2-diols predominate over α-ketols except in the oxidation of (-)-α-pinene that afforded the α-ketol in 51percent yield while no trace of the corresponding 1,2-diol was detected.All reactions prceeded through the formation of unstable brownish precipitates, presumably the intermediate ruthenium (VI) esters, which easily decomposed during the work-up step.Results from oxidation of trans-7-tetradecene and cis and trans-11-tetradecenyl acetate indicated that the reaction was syn stereospecific.In some cases, 1,3-dioxolane products, formed by condensation of the 1,2-diol and the aldehyde materials, were also obtained among the reaction products.Their possible origin is briefly discussed.

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