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5-bromo-3-hydroxy-1-methyl-3-(phenylethynyl)-1,3-dihydro-2H-indol-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1621167-79-0

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1621167-79-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1621167-79-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,1,1,6 and 7 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1621167-79:
(9*1)+(8*6)+(7*2)+(6*1)+(5*1)+(4*6)+(3*7)+(2*7)+(1*9)=150
150 % 10 = 0
So 1621167-79-0 is a valid CAS Registry Number.

1621167-79-0Downstream Products

1621167-79-0Relevant articles and documents

Stereoselective and Regioselective Assembly of Spirooxindole [2,1-b]furan Motifs through a Tandem Friedel–Crafts Alkylation/5-exo-dig-Cyclization

Kumarswamyreddy, Nandarapu,Kesavan, Venkitasamy

, p. 5301 - 5308 (2016)

3-Alkynyl-3-OBoc (Boc = tert-butoxycarbonyl) oxindole derivatives underwent a CuII-mediated stereo- and regioselective Friedel–Crafts alkylation/5-exo-dig-cyclization with 2-naphthols or cyclic 1,3-diketones. This gave spirooxindole [2,1-b]furan motifs in good to excellent yields under ambient conditions, and the process has a wide substrate scope.

Synthesis of 3-ethynyl-3-hydroxy-2-oxindoles and 3-hydroxy-3-(indol-3-yl) indolin-2-ones using CuWO4 nanoparticles as recyclable heterogeneous catalyst in aqueous medium

Paplal, Banoth,Sathish, Kota,Nagaraju, Sakkani,Kashinath, Dhurke

, (2019/11/14)

A simple method for the direct activation of phenyl acetylenes (spC-H activation) and selective synthesis of 3-hydroxy-3-(indol-3-yl) indolin-2-ones and 3,3′-bis(indolyl)indolin-2-ones (via Friedel-Crafts alkylation reaction) is reported in presence of Cu

Catalytic C-H activation of arylacetylenes: A fast assembly of 3-(arylethynyl)-3-hydroxyindolin-2-ones using CuI/DBU

Chouhan, Mangilal,Senwar, Kishna Ram,Kumar, Kapil,Sharma, Ratnesh,Nair, Vipin A.

, p. 195 - 202 (2014/03/21)

A highly efficient and atom-economic methodology has been developed for the synthesis of 3-(arylethynyl)-3-hydroxyindolin-2-ones from isatins by C-H activation of arylacetylenes using a catalytic quantity of copper(I) iodide (5 mol%) and DBU (20 mol%) at 25°C, affording the products in excellent yields in very short reaction time (5 min).

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