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tert-butyl 3-oxo-5-phenyl-2-(triphenylphosphoranylidene)-(E)-4-pentenoate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

83207-71-0

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83207-71-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83207-71-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,2,0 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83207-71:
(7*8)+(6*3)+(5*2)+(4*0)+(3*7)+(2*7)+(1*1)=120
120 % 10 = 0
So 83207-71-0 is a valid CAS Registry Number.

83207-71-0Relevant academic research and scientific papers

A new synthesis of triphenylphosphorane ylide precursors to α-keto amide/ester and tricarbonyl units via horner-wadsworth-emmons reaction

Lee, Kieseung

, p. 2776 - 2782 (2012/04/17)

Newly developed Horner-Wadsworth-Emmons (HWE) reagents 5 having triphenylphosphorane ylide subunits readily condensed with various carbonyl compounds under mild reaction conditions to afford β,γ-unsaturated α-keto triphenylphorane ylides in good to excell

Charge-Directed Conjugate Addition Reactions in the Preparation of Substituted Methyl Ketones

Cooke, Manning P.,Burman, Diana L.

, p. 4955 - 4963 (2007/10/02)

Charge-directed conjugated addition reactions of the tert-butyl esters of α,β-unsaturated acylphosphoranes 2 have been used to prepare a variety of substituted methyl ketones.Substituted ylides 6 are prepared by alkylating ylide anions 4 generated by the addition of nucleophiles to 2 and are converted under acidic conditions to substituted (acylmethylene)phosphoranes 12 which are hydrolyzed to methyl ketones.The utility of these unsaturated acylphosphoranes as methyl vinyl ketone equivalents in conjugate addition-alkylation reactions is demonstrated in a synthesis of the racemic form of the sex pheromone of the California red scale, 14.

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