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69843-08-9

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69843-08-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69843-08-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,8,4 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 69843-08:
(7*6)+(6*9)+(5*8)+(4*4)+(3*3)+(2*0)+(1*8)=169
169 % 10 = 9
So 69843-08-9 is a valid CAS Registry Number.

69843-08-9Relevant articles and documents

Electroreductive Cross-Coupling of Trifluoromethyl Alkenes and Redox Active Esters for the Synthesis of Gem-Difluoroalkenes

Claraz, Aurélie,Allain, Clémence,Masson, Géraldine

supporting information, (2021/11/17)

An electroreductive access to gem-difluoroalkenes has been developed through the decarboxylative/defluorinative coupling of N-hydroxyphtalimides esters and α-trifluoromethyl alkenes. The electrolysis is performed under very simple reaction conditions in a

Photoredox/Hydrogen Atom Transfer Cocatalyzed C-H Difluoroallylation of Amides, Ethers, and Alkyl Aldehydes

Guo, Yuan-Qiang,Wu, Yifan,Wang, Ruiguo,Song, Hongjian,Liu, Yuxiu,Wang, Qingmin

supporting information, p. 2353 - 2358 (2021/04/05)

Herein, we report a method that combines hydrogen atom transfer and photoredox catalysis to achieve the dehydrogenative difluoroallylation of amides, ethers, and alkyl aldehydes. This operationally convenient method transforms a broad scope of substrates into the corresponding gem-difluoroalkenes via the construction of C(sp3)-C(sp3) or C(sp3)-C(sp2) bonds. Excellent functional group compatibility and high selectivity make this method have a wide range of substrate types and render it suitable for late-stage modification of pharmaceutical intermediates.

Site-Selective Defluorinative sp3C-H Alkylation of Secondary Amides

Day, Craig S.,Martin, Ruben,Yue, Wen-Jun

supporting information, p. 6395 - 6400 (2021/05/29)

A site-selective defluorinative sp3 C-H alkylation of secondary amides that rapidly and reliably incorporates gem-difluoroalkene motifs into previously unfunctionalized sp3 sites is disclosed. This protocol is distinguished by its mild conditions, wide scope, and exquisite site-selectivity, thus unlocking a new platform to introduce carbonyl isosteres at saturated hydrocarbon sites.

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