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74857-16-2

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74857-16-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74857-16-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,5 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74857-16:
(7*7)+(6*4)+(5*8)+(4*5)+(3*7)+(2*1)+(1*6)=162
162 % 10 = 2
So 74857-16-2 is a valid CAS Registry Number.

74857-16-2Relevant articles and documents

Catalyst-Controlled Selectivity in the Synthesis of C2- and C3-Sulfonate Esters from Quinoline N-Oxides and Aryl Sulfonyl Chlorides

Ying, Beibei,Xu, Jun,Zhu, Xiaolei,Shen, Chao,Zhang, Pengfei

, p. 2604 - 2608 (2016/08/30)

The first example of the catalyst-controlled selective synthesis of C2- and C3-sulfonate-ester-substituted quinolines was developed by employing LaCl3 and chitosan@CuI catalysts, respectively. This protocol provides an expeditious route to an important class of quinoline derivatives frequently found in many biologically active compounds and features good practicality, high efficiency, and environmental friendliness. In addition, the easily recoverable chitosan@copper catalysts can be recycled five times without significant loss of catalytic performance.

Pd-catalyzed direct cross-coupling of electron-deficient polyfluoroarenes with heteroaromatic tosylates

Fan, Shilu,Yang, Jie,Zhang, Xingang

supporting information; experimental part, p. 4374 - 4377 (2011/10/08)

We report a Pd-catalyzed direct cross-coupling of electron-deficient polyfluoroarenes with heteroaromatic tosylates. The notable features of this reaction are its high reaction efficiency, excellent chemoselectivity, operational simplicity, and mild react

Studies on tertiary amine oxides. LXVI. Reactions on quinoline 1-oxide derivatives with tosyl chloride in the presence of triethylamine

Shichiri,Funakoshi,Saeki,Hamana

, p. 493 - 499 (2007/10/02)

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