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1174281-23-2

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1174281-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1174281-23-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,4,2,8 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1174281-23:
(9*1)+(8*1)+(7*7)+(6*4)+(5*2)+(4*8)+(3*1)+(2*2)+(1*3)=142
142 % 10 = 2
So 1174281-23-2 is a valid CAS Registry Number.

1174281-23-2Relevant articles and documents

A Novel Convenient Synthesis of Pyridinyl and Quinolinyl Triflates and Tosylates via One-Pot Diazotization of Aminopyridines and Aminoquinolines in Solution

Kassanova, Assiya Zh.,Krasnokutskaya, Elena A.,Beisembai, Perizat S.,Filimonov, Victor D.

, p. 256 - 262 (2016/01/15)

The first effective and simple method for the direct one-pot transformation of 2-, 3-, and 4-aminopyridines, 2,6-diaminopyridines, and 2-aminoquinoline into the corresponding pyridinyl and quinolinyl trifluoromethanesulfonates and tosylates in solvents was developed. The procedure involves diazotization of the heterocyclic amines with sodium nitrite in mixed hexane-DMSO or hexane-DMF solutions in the presence of trifluoromethanesulfonic acid or p-toluenesulfonic acid.

Heteroaromatic tosylates as electrophiles in regioselective Mizoroki-Heck-coupling reactions with electron-rich olefins

Gogsig, Thomas M.,Lindhardt, Anders T.,Dekhane, Mouloud,Grouleff, Julie,Skrydstrup, Troels

supporting information; experimental part, p. 5950 - 5955 (2010/02/28)

Heteroaromatic 2-pyridyl tosylates were successfully applied as electrophiles in palladium(0)-catalyzed Mizoroki-Heck-coupling reactions to electron-rich olefins with complete aregioselectivity. This protocol represents a general strategy for the application of pyridyl tosylates and mesylates in the Mizoroki-Heck coupling. The catalytic system also proved adaptable to changes in the heteroaromatic core as well as large-scale applications. Finally, the synthetic utility of the functionalized α-heteroarylvinyl amides was established providing straightforward access to highly functionalized heteroaromatic compounds including chiral benzylic amide derivatives.

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