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871891-19-9

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871891-19-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 871891-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,8,9 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 871891-19:
(8*8)+(7*7)+(6*1)+(5*8)+(4*9)+(3*1)+(2*1)+(1*9)=209
209 % 10 = 9
So 871891-19-9 is a valid CAS Registry Number.

871891-19-9Downstream Products

871891-19-9Relevant academic research and scientific papers

Copper-Catalyzed Hydroarylation of Internal Alkynes: Highly Regio- and Diastereoselective Synthesis of 1,1-Diaryl, Trisubstituted Olefins

Kortman, Gregory D.,Hull, Kami L.

, p. 6220 - 6224 (2017)

The copper-catalyzed hydroarylation of internal, unsymmeric alkynes is presented. Trisubstituted alkenes are obtained as single diastereomers in good to excellent yields and excellent regioselectivities. The scope of the reaction is presented with respect to alkyne and aryl iodide coupling partners. Initial mechanistic experiments indicate a hydrocupration event followed by a two-electron oxidative addition/reductive elimination pathway.

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