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1581709-78-5

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1581709-78-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1581709-78-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,8,1,7,0 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1581709-78:
(9*1)+(8*5)+(7*8)+(6*1)+(5*7)+(4*0)+(3*9)+(2*7)+(1*8)=195
195 % 10 = 5
So 1581709-78-5 is a valid CAS Registry Number.

1581709-78-5Downstream Products

1581709-78-5Relevant articles and documents

Palladium-Catalyzed Divergent Arylation with Triazolopyridines: One-Pot Synthesis of 6-Aryl-2-α-styrylpyridines

Moon, Youngtaek,Kwon, Soonhyung,Kang, Dahye,Im, Honggu,Hong, Sungwoo

supporting information, p. 958 - 964 (2016/04/05)

We have developed a new strategy for palladium-catalyzed arylation reactions with triazolopyridines, wherein two different chemical transformations (C-3 vs. C-7) are observed by differentiating the substrates using different bases. The reactive palladium carbenoids were directly generated from triazolopyridines and underwent denitrogenative arylations with aryl bromides. Intriguingly, when potassium carbonate was replaced with potassium tert-butoxide, direct C-H arylation occurred at the most acidic position (C-7). Moreover, two different catalytic arylation events were successfully performed in a one-pot sequence, providing a convenient access to 6-aryl-2-α-styrylpyridines.

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