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703-77-5

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703-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 703-77-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,0 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 703-77:
(5*7)+(4*0)+(3*3)+(2*7)+(1*7)=65
65 % 10 = 5
So 703-77-5 is a valid CAS Registry Number.

703-77-5Relevant articles and documents

Ring contraction of 1,2-dihydronaphthalenes promoted by thallium(III) in acetonitrile: A diastereoselective approach to indanes

Ferraz, Helena M. C.,Carneiro, Vania M. T.,Silva Jr., Luiz F.

experimental part, p. 385 - 388 (2009/06/18)

Trans-1,3-Disubstituted indanes are conveniently accessed by a stereoselective ring contraction of 1,2-dihydronaphthalenes upon treatment with thallium(III) nitrate (TTN) in acetonitrile. Under these conditions, the oxidative rearrangement of either di- or trisubstituted double bonds is possible. Georg Thieme Verlag Stuttgart.

The Stereochemistry of Organometallic Compounds. XXVII. Nucleophilic and Electrophilic Substitution Reactions of Conformationally Restricted Arenechromium Compounds

Jackson, W. Roy,Rae, Ian D.,Wong, Margaret G.

, p. 303 - 315 (2007/10/02)

The regioselectivity of reaction of tricarbonyl(1,1-dimethylindane)chromium with selected electrophiles and nucleophiles has been shown to be influenced by the preferred conformation of the tricarbonylchromium group.Nucleophiles preferentially react at carbon atoms eclipsed by a chromium-carbonyl bond and electrophiles at carbon atoms in staggered positions.When similar reactions were attempted with some chelated arenechromium dicarbonyl phosphorus compounds only low yields of substitution products were obtained.

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