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58414-96-3

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58414-96-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 58414-96-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,4,1 and 4 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 58414-96:
(7*5)+(6*8)+(5*4)+(4*1)+(3*4)+(2*9)+(1*6)=143
143 % 10 = 3
So 58414-96-3 is a valid CAS Registry Number.

58414-96-3Relevant articles and documents

Palladium Catalyzed Monoselective α-Arylation of Sulfones and Sulfonamides with 2,2,6,6-Tetramethylpiperidine·ZnCl·LiCl Base and Aryl Bromides

Knauber, Thomas,Tucker, Joseph

, p. 5636 - 5648 (2016/07/14)

A palladium catalyzed Negishi-type α-arylation of sulfones and sulfonamides with a broad range of aryl bromides has been developed. The substrates are selectively metalated in situ with tmp·ZnCl·LiCl base (tmp: 2,2,6,6-tetramethylpiperidine) and cross-coupled in the presence of a catalyst system that is generated from Pd(dba)2 and XPhos. Electron-deficient, electron-rich, and heterocyclic aryl bromides have been successfully cross-coupled, and sensitive functional groups are well tolerated. Simple aryl bromides are converted overnight at 60 °C in THF while heteroaryl bromides are efficiently coupled within 2 h at 130 °C in a microwave reactor. The desired monoarylated α-branched benzyl sulfones and sulfonamides were obtained in good yields, and overarylation was not detected. The procedure is ideal for late stage functionalization in parallel medicinal chemistry.

Modifiable sulfur tethers as directing groups for aromatic C-H acetoxylation reactions

Richter, Heinrich,Beckendorf, Stephan,Mancheno, Olga Garcia

supporting information; experimental part, p. 295 - 302 (2011/04/16)

A designed new class of modifiable sulfur tethers for aromatic C-H bond functionalizations is presented. As a model, the palladium-catalyzed directed acetoxylation reaction was studied. The more challenging sulfoxide tethers were the most effective in this transformation, showing a broad functionality tolerance, high S oxido-redox stability and no catalyst poisoning. Preliminary mechanistic studies indicate that the higher reactivity and selectivity shown by the sulfoxide tethers vs. the corresponding sulfones can be attributed to an extra coordination of the sulfoxide S atom to the catalyst. The utility of the presented methodology to generate structurally interesting aromatic derivatives by a subsequent modification of the S-tether is also exemplified.

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