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3-Thiophenecarboxylic acid, 2-(4-methoxyphenyl)-5-phenyl-, methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

67139-59-7

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67139-59-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67139-59-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,1,3 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 67139-59:
(7*6)+(6*7)+(5*1)+(4*3)+(3*9)+(2*5)+(1*9)=147
147 % 10 = 7
So 67139-59-7 is a valid CAS Registry Number.

67139-59-7Downstream Products

67139-59-7Relevant academic research and scientific papers

Copper-Catalyzed Coupling of 2-Siloxy-1-alkenes and Diazocarbonyl Compounds: Approach to Multisubstituted Furans, Pyrroles, and Thiophenes

Tan, Wei Wen,Yoshikai, Naohiko

, p. 5566 - 5573 (2016)

We report herein copper(II)-catalyzed cyclization reactions of silyl enol ethers derived from methyl ketones with α-diazo-β-ketoesters or α-diazoketones to afford 2-siloxy-2,3-dihydrofuran derivatives or 2,3,5-trisubstituted furans, respectively, under mild conditions. The former cyclization products serve as versatile 1,4-diketone surrogates, allowing facile preparation of 2,3,5-trisubstituted furans, pyrroles, and thiophenes.

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