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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

Remote Regioselective Radical C-H Functionalization of Unactivated C-H Bonds in Amides: The Synthesis of gem-Difluoroalkenes

Hu, Qu-Ping,Cheng, Jing,Wang, Ying,Shi, Jie,Wang, Bi-Qin,Hu, Ping,Zhao, Ke-Qing,Pan, Fei

supporting information, p. 4457 - 4462 (2021/05/26)

The site-selective functionalization of unactivated aliphatic amines is an attractive and challenging synthetic approach. We herein report a general strategy for the remote site-selective functionalization of unactivated C(sp3)-H bonds in amides by photogenerated amidyl radicals to form gem-difluoroalkenes with trifluoromethyl-substituted alkenes. The site selectivity is controlled by a 1,5-hydrogen atom transfer (HAT) process of the amide. This photocatalyzed transformation shows both chemo- and site-selectivity, facilitating the formation of a secondary, tertiary, or quaternary carbon center.

Photoredox relay-catalyzedgem-difluoroallylation of alkyl iodides

Cao, Yunpeng,Guo, Yuanqiang,Liu, Yuxiu,Song, Hongjian,Wang, Qingmin

supporting information, p. 9768 - 9771 (2021/09/30)

Herein, a new example of relay catalysis, using a combination of Mn2(CO)10and an iridium-based photocatalyst, is reported. In our relay catalytic reaction, the Mn catalyst and iridium-based photocatalyst catalyze the reaction at different stages in the desired sequence under the same reaction conditions, and do not inhibit each other. This convenient method transforms a broad scope of alkyl iodides into the correspondinggem-difluoroalkenesviaC(sp3)-C(sp3) bond construction. The protocol has good functional group tolerance and is suitable for the late-stage modification of multifunctional complex molecules.

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