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15999-95-8

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15999-95-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15999-95-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,9 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 15999-95:
(7*1)+(6*5)+(5*9)+(4*9)+(3*9)+(2*9)+(1*5)=168
168 % 10 = 8
So 15999-95-8 is a valid CAS Registry Number.

15999-95-8Relevant articles and documents

Synthesis of Imidoyl Chlorides Using Phosphorus Trichloride

Nguyen, T. L.,Popov, Yu. V.,Shishkin, E. V.,Shishkin, V. E.,Vo, T. L. Q.,Zotov, Yu. L.

, p. 849 - 851 (2021/06/12)

Abstract: The reaction of carboxamides with phosphorus trichloride under heating at 75–80°C for 1 h in the presence of a 4-dimethylaminopyridine catalyst was used to synthesize imidoyl chlorides in yields of 63–99%.

Silver-Catalyzed Cascade Cyclization Reaction of Isocyanides with Sulfoxonium Ylides: Synthesis of 3-Aminofurans and 4-Aminoquinolines

Liang, Yong-Xin,Yang, Ming,He, Bo-Wen,Zhao, Yu-Long

, p. 7640 - 7644 (2020/10/09)

A silver-catalyzed cascade cyclization reaction of isocyanides with sulfoxonium ylides has been developed for the first time. This reaction provides a new and efficient method for the construction of highly functionalized 3-aminofurans and 4-aminoquinolines from readily available starting materials in a single step.

The impact of cation structure upon the acidity of triazolium salts in dimethyl sulfoxide

Konstandaras, Nicholas,Dunn, Michelle H.,Guerry, Max S.,Barnett, Christopher D.,Cole, Marcus L.,Harper, Jason B.

, p. 66 - 75 (2019/12/26)

A series of triazolium salts, selected for their varying electronic and steric properties, were prepared and their pKa values were determined in DMSO at 25 °C using the bracketing indicator method. The effect of each systematic structural variation upon the acidity of the triazolium cation has been considered, in particular examining the effects of systematically altering electronic properties, quantified through the use of Hammett σ parameters. The first pKa value for an azolium salt that generates a mesionic carbene is also reported. These new data allow for the selection of appropriate bases for the deprotonation of such triazolium salts and the potential to correlate the pKa values determined herein with the nucleophilicity of the corresponding carbenes.

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