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83897-71-6

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83897-71-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83897-71-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,8,9 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83897-71:
(7*8)+(6*3)+(5*8)+(4*9)+(3*7)+(2*7)+(1*1)=186
186 % 10 = 6
So 83897-71-6 is a valid CAS Registry Number.

83897-71-6Downstream Products

83897-71-6Relevant articles and documents

Highly Stereoselective and General Synthesis of (E)-Stilbenes and Alkenes by Means of an Aqueous Wittig Reaction

McNulty, James,Das, Priyabrata

, p. 4031 - 4035 (2009)

The chemoselective formation of trialkyl(benzylidene) ylides in water and their Wittig reaction with aromatic and. aliphatic aldehydes provides a practical, stereoselective and environmentally benign route to valuable (E)-stilbenes and alkenes. The synthesis of the phytoalexin resveratrol is described, J.n addition, the method allows for a gram-scale synthesis of the anticancer agent DMU-212 utilizing no organic solvent at any stage. Wiley-VCH Verlag GmbH & Co. KGaA.

Hydroalkylation of terminal aryl alkynes with alkyl diacyl peroxides

Li, Yougui,Ge, Liang,Qian, Bo,Babu, Kaki Raveendra,Bao, Hongli

supporting information, p. 5677 - 5680 (2016/11/28)

A photo and nickel co-catalyzed hydroalkylation of terminal aryl alkynes enabled Z-preferred olefin synthesis has been developed under mild conditions. Alkyl diacyl peroxides were utilized as a new type of alkylation reagents and afforded Z-olefins as the major products in moderate to good yields.

Wittig Reagents Bound to Cross-Linked Polystyrenes

Bernard, Margaret,Ford, Warren T.

, p. 326 - 332 (2007/10/02)

Insoluble benzyltriarylphosphonium and methyltriarylphosphonium salts have been prepared on 2percent and 8percent divinylbenzene cross-linked polystyrene and on 20percent divinylbenzene cross-linked macroporous polystyrene.Phosphoranes were generated with sodium methoxide or sodium ethoxide in THF and with the dimethylsulfinyl carbanion in Me2SO from the benzyl- and methylphosphonium salts, respectively.Reactions of the phosphoranes with a variety of aldehydes and ketones provided alkenes in 73-96percent yields (by GLC analysis) with the 2percent cross-linked polymer, 52-77percent yields with the 8percent cros s-linked polymer, and 72-87percent yields with the 20percent cross-linked macroporous polymer.The rates of phosphorane generation and alkene formation depend on the polymer, decreasing in the order 2percent > 20percent macroporous > 8percent cross-linked.The fraction of E double bond product from the benzylphosphonium salt and either benzaldehyde or cinnamaldehyde is greater with the 20percent cross-linked macroporous polymer than with the 2percent cross-linked polymer.The byproduct polymer-bound phosphine oxides were reduced to phosphines with trichlorsilane, and the phosphines were reused for Wittig synthesis.A quantitative 31P-NMR analysis of phosphine and phosphine oxide residues in polystyrene gels is reported.

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