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1-Methyl-3-benzyloxycarbonylmethylen-2-indolinon is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21591-74-2

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21591-74-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21591-74-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21591-74:
(7*2)+(6*1)+(5*5)+(4*9)+(3*1)+(2*7)+(1*4)=102
102 % 10 = 2
So 21591-74-2 is a valid CAS Registry Number.

21591-74-2Relevant academic research and scientific papers

Enantioselective Michael/cyclization reaction sequence: Scaffold-inspired synthesis of spirooxindoles with multiple stereocenters

Cao, Yiming,Jiang, Xianxing,Liu, Luping,Shen, Fangfang,Zhang, Futing,Wang, Rui

, p. 9124 - 9127 (2011)

A-spiro-ing: The title reaction of α-isothiocyanato imides and methyleneindolinones has been realized for the first time using 1 as the catalyst. This newly developed synthetic method provides a simple, efficient, and environmentally friendly way to acces

Organocatalytic conjugate additions of acetylacetone to 3-ylideneoxindoles: A direct access to highly enantioenriched oxindole derivatives

Duan, Shu-Wen,Lu, Hai-Hua,Zhang, Fu-Gen,Xuan, Jun,Chen, Jia-Rong,Xiao, Wen-Jing

supporting information; experimental part, p. 1847 - 1852 (2011/07/31)

A highly enantioselective organocatalytic conjugate addition of acetylacetone to 3-ylideneoxindoles is described. This method provides polysubstituted oxindoles in good to excellent enantioselectivities and high isolated yields. Georg Thieme Verlag Stuttg

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