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92199-59-2

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92199-59-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92199-59-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,1,9 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 92199-59:
(7*9)+(6*2)+(5*1)+(4*9)+(3*9)+(2*5)+(1*9)=162
162 % 10 = 2
So 92199-59-2 is a valid CAS Registry Number.

92199-59-2Relevant articles and documents

A novel strategy for the synthesis of 2-arylpyridines using one-pot 6π-azaelectrocyclization

Kobayashi, Toyoharu,Hatano, Sho,Tsuchikawa, Hiroshi,Katsumura, Shigeo

, p. 4349 - 4351 (2008)

A novel and useful method for the synthesis of 2-arylpyridines with a high efficiency and generality was achieved by utilizing the one-pot 6π-azaelectrocyclization followed by a base treatment. This is the first example of applying a sulfonamide to the azaelectrocyclization for efficient substituted pyridine synthesis.

Chemoselective Synthesis of Polysubstituted Pyridines from Heteroaryl Fluorosulfates

Zhang, Enxuan,Tang, Jiaze,Li, Suhua,Wu, Peng,Moses, John E.,Sharpless, K. Barry

supporting information, p. 5692 - 5697 (2016/04/20)

A selection of heteroaryl fluorosulfates were readily synthesized using commercial SO2F2 gas. These substrates are highly efficient coupling partners in the Suzuki reaction. Through judicious selection of Pd catalysts the fluorosulfate functionality is differentiated from bromide and chloride; the order of reactivity being: -Br> -OSO2F> -Cl. Exploiting this trend allowed the stepwise chemoselective synthesis of a number of polysubstituted pyridines, including the drug Etoricoxib. A selection of heteroaryl fluorosulfates were readily synthesized using commercial SO2F2 gas. These substrates are highly efficient coupling partners in the Suzuki reaction. Through judicious selection of Pd catalysts the fluorosulfate functionality is differentiated from bromide and chloride; the order of reactivity being: -Br> -OSO2F> -Cl. Exploiting this trend allowed the stepwise chemoselective synthesis of a number of polysubstituted pyridines, including the drug Etoricoxib.

Direct arylation of substituted pyridines with arylboronic acids catalyzed by iron(II) oxalate

Huang, Yibo,Guan, Dan,Wang, Liang

, p. 1294 - 1298 (2015/02/05)

The direct arylation of substituted pyridines with several arylboronic acids has been developed. This transformation could proceed readily at ambient temperature using inexpensive reagents: iron(II) oxalate as a catalyst, potassium persulfate as a co-oxidant, which can afford the arylated products in mild to good yields. The mechanism is presumed to proceed through a nucleophilic radical addition to the pyridines with in situ reoxidation.

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