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17522-32-6

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17522-32-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17522-32-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,5,2 and 2 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17522-32:
(7*1)+(6*7)+(5*5)+(4*2)+(3*2)+(2*3)+(1*2)=96
96 % 10 = 6
So 17522-32-6 is a valid CAS Registry Number.

17522-32-6Relevant articles and documents

A simple and versatile re-catalyzed meyer-schuster rearrangement of propargylic alcohols to α,β-unsaturated carbonyl compounds

Stefanoni, Massimo,Luparia, Marco,Porta, Alessio,Zanoni, Giuseppe,Vidari, Giovanni

supporting information; experimental part, p. 3940 - 3944 (2009/12/03)

The development of a general catalytic procedure for the rapid and efficient 1,3-rearrangement of free secondary and tertiary propargylic alcohols to the corresponding α,β-unsaturated carbonyl compounds using available [ReOCl3(OPPh3)-(SMe2)] complex, was reported. The reaction was carried out under neutral environmental conditions with no racemization of potentially enolizable stereocenters with virtually complete E stereoselectivity. The reaction under dimethoxyethane, proceeded at the lower rate than in THF, but with reduced by-products and the yield obtained were highly significant. The reaction was reported to increase constantly at the expense of the (Z)-isomer 2b, where the double bong isomerization was attributed to a catalytic effect of the rhenium complex. The resulted new version of Meyer-Schuster rearrangement will find enormous application in organic synthesis to develop one-pot multistep reaction sequences.

APPLICATION OF BIOCHEMICAL METHODS IN ENANTIOSELECTIVE SYNTHESIS OF BIOACTIVE NATURAL PRODUCTS

Mori, Kenji

, p. 393 - 406 (2007/10/02)

Enzymes as well as yeasts were used in enantioselective syntheses of bioregulators such as hormones and semiochemicals.Lipases and esterases were employed in achieving optical resolution, conversion of meso-compounds to optically active compounds, and macrolactonization.Lactase effected glucosidation of a phenolic hydroxy ketone without any protection of the functional groups.Yeasts provided a variety of optically active hydroxy esters and ketones, which served as versatile non-racemic chiral building blocks.

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