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288570-39-8

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288570-39-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 288570-39-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,8,5,7 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 288570-39:
(8*2)+(7*8)+(6*8)+(5*5)+(4*7)+(3*0)+(2*3)+(1*9)=188
188 % 10 = 8
So 288570-39-8 is a valid CAS Registry Number.

288570-39-8Relevant articles and documents

Oxidative cleavage of 1,3-diaryl/(heteroaryl)benzo[c]furans into 1,2-diaroyl/(heteroaroyl)benzenes using selenium dioxide

Karunakaran, Jayachandran,Sankar, Elumalai,Mohanakrishnan, Arasambattu K.

, p. 1349 - 1356 (2016)

Reaction of 1,3-disubstituted isobenzofurans (IBFs) with selenium dioxide in tetrahydrofuran (THF) at room temperature led to the formation of 1,2-diaroyl/(heteroaroyl)benzenes in good to excellent yields.

Synthesis of annulated arenes and heteroarenes involving lewis acid-mediated regioselective annulation of unsymmetrical 1,2-(Diaryl/ diheteroarylmethine)dipivalates

Sivasakthikumaran, Ramakrishnan,Nandakumar, Meganathan,Mohanakrishnan, Arasambattu K.

, p. 9053 - 9071,19 (2012/12/12)

A ZnBr2-mediated regioselective annulation of unsymmetrical 1,2-diarylmethinedipivalates in DCM at room temperature led to the formation of annulated arenes and heteroarenes. The annulation of the dipivalate proceeds through the intermediacy of

Copper-catalyzed benzylic C-H oxygenation under an oxygen atmosphere via N-H imines as an intramolecular directing group

Zhang, Line,Ang, Gim Yean,Chiba, Shunsuke

, p. 1622 - 1625 (2011/05/05)

Copper-catalyzed benzylic C-H oxygenation under an oxygen atmosphere was developed starting from carbonitriles and Grignard reagents via N-H imine intermediates. The present process is characterized by the following two-step sequence in a one-pot manner: (1) addition of Grignard reagents to carbonitriles to form N-H imines and (2) benzylic C-H oxygenation (C=O bond formation) triggered by 1,5-hydrogen atom transfer with transient iminyl copper species.

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