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78646-39-6

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78646-39-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78646-39-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,6,4 and 6 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 78646-39:
(7*7)+(6*8)+(5*6)+(4*4)+(3*6)+(2*3)+(1*9)=176
176 % 10 = 6
So 78646-39-6 is a valid CAS Registry Number.

78646-39-6Relevant articles and documents

Ruthenium-Catalyzed meta-CAr–H Bond Difluoroalkylation of 2-Phenoxypyridines

Jia, Chunqi,Wang, Shichong,Lv, Xulu,Li, Gang,Zhong, Lei,Zou, Lei,Cui, Xiuling

supporting information, p. 1992 - 1995 (2020/03/23)

A ruthenium-catalyzed meta-selective CAr–H bond difluoroalkylation of 2-phenoxypyridine using 2-bromo-2,2-difluoroacetate has been developed. Mechanistic studies indicated that this difluoroalkylation might involve a radical process. Furthermore, a new method is reported for the synthesis of 2-(meta-difluoroalkylphenoxy)pyridine derivatives, which are present in many pharmaceuticals and other functional compounds.

Identification of an Oxalamide Ligand for Copper-Catalyzed C?O Couplings from a Pharmaceutical Compound Library

Chan, Vincent S.,Krabbe, Scott W.,Li, Changfeng,Sun, Lijie,Liu, Yue,Nett, Alex J.

, (2019/04/30)

A typical pharmaceutical compound library is stocked with molecular diversity and could provide a platform for the discovery of new ligand structures. Herein, we describe the use of this approach in combination with high throughput screening to identify N,N’-bis(thiophene-2-ylmethyl)oxalamide as a ligand that is generally effective for copper-catalyzed C?O cross-couplings to prepare both biarylethers as well as phenols under mild conditions.

Chromium-Catalyzed Regioselective Kumada Arylative Cross-Coupling of C(aryl)-O Bonds with a Traceless Activation Strategy

Fan, Fei,Tang, Jinghua,Luo, Meiming,Zeng, Xiaoming

, p. 13549 - 13559 (2018/10/31)

We report here the chromium-catalyzed regioselective Kumada arylative cross-coupling of C(aryl)-O bonds at ambient temperature. By using a simple and low-cost chromium(II) chloride salt as a precatalyst, accompanied by a 2-pyridyl ligation, the catalytic cleavage and arylative coupling of C(aryl)-O bonds were achieved with a traceless activation strategy, overcoming the regioselectivity obstacle when several C-O bonds coexist in the Kumada coupling system.

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