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1404454-56-3

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1404454-56-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1404454-56-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,4,4,5 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1404454-56:
(9*1)+(8*4)+(7*0)+(6*4)+(5*4)+(4*5)+(3*4)+(2*5)+(1*6)=133
133 % 10 = 3
So 1404454-56-3 is a valid CAS Registry Number.

1404454-56-3Downstream Products

1404454-56-3Relevant articles and documents

Palladium-catalyzed sonogashira-coupling conjoined C-H activation: A regioselective tandem strategy to access indolo- and pyrrolo[1,2- a ]quinolines

Shukla, Satya Prakash,Tiwari, Rakesh K.,Verma, Akhilesh K.

, p. 10382 - 10392 (2013/01/15)

An operationally simple approach for the regioselective tandem synthesis of indolo[1,2-a]quinolines 4a-v and pyrrolo[1,2-a]quinolines 5a-k from 1-(2-bromophenyl)-1H-indole/pyrrole/imidazole 1a-c, 2a,b by the palladium-catalyzed sequential C-C bond formation is described. The developed approach involves the palladium-catalyzed Sonogashira coupling followed by the intramolecular C-C bond formation via C-H activation, which leads to the formation of 6-endo-dig cyclized product. This synthetic methodology accommodates wide functional group variation on alkyne, which proves to be advantageous for the structural and biological activity assessments.

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