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1638159-47-3

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1638159-47-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1638159-47-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,1,5 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1638159-47:
(9*1)+(8*6)+(7*3)+(6*8)+(5*1)+(4*5)+(3*9)+(2*4)+(1*7)=193
193 % 10 = 3
So 1638159-47-3 is a valid CAS Registry Number.

1638159-47-3Downstream Products

1638159-47-3Relevant articles and documents

Reactivity of 3-substituted fluorobenzenes in palladium-catalysed direct arylations with aryl bromides

Yan, Tao,Zhao, Liqin,He, Mian,Soule, Jean-Francois,Bruneau, Christian,Doucet, Henri

, p. 1586 - 1596 (2014/06/09)

The influence of both electron-withdrawing and electron-donating substituents such as nitro, nitrile, chloro, bromo and methoxy at C-3 on fluorobenzenes for their palladium-catalysed direct C-2 arylation has been explored. With electron-withdrawing substituents, the reaction proceeds nicely using 2-4 mol% of an air-stable palladium complex and potassium pivalate/dimethylacetamide (PivOK/DMA) as catalytic system; and in general, a very regioselective arylation at C-2 was observed. Moreover, a variety of substituents on the aryl bromide coupling partner, such as benzoyl, formyl, nitro, nitrile, chloro and methyl, and also heteroaryl bromides were tolerated.

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