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99839-93-7

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99839-93-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99839-93-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,3 and 9 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99839-93:
(7*9)+(6*9)+(5*8)+(4*3)+(3*9)+(2*9)+(1*3)=217
217 % 10 = 7
So 99839-93-7 is a valid CAS Registry Number.

99839-93-7Downstream Products

99839-93-7Relevant articles and documents

Electrochemical Synthesis of Cyanoformamides from Trichloroacetonitrile and Secondary Amines Mediated by the B12Derivative

Moniruzzaman, Mohammad,Yano, Yoshio,Ono, Toshikazu,Shimakoshi, Hisashi,Shiota, Yoshihito,Yoshizawa, Kazunari,Hisaeda, Yoshio

, p. 16134 - 16143 (2021/07/19)

The B12derivative, heptamethyl cobyrinate, -mediated electrochemical synthesis of cyanoformamides has been developed. Aerobic oxygenation of the carbon-centered radical initiatedin situgeneration of the reactive acyl chloride intermediate, whic

Transition-Metal-Free Conversion of Trifluoropropanamides into Cyanoformamides through C-CF3 Bond Cleavage and Nitrogenation

Wang, Fang,Zhang, Tao,Tu, Hai-Yong,Zhang, Xing-Guo

, p. 5475 - 5480 (2017/05/24)

A new transition-metal-free transformation of trifluoropropanamides into cyanoformamides through a sequence of C-CF3 bond cleavage and nitrogenation using tert-butyl nitrite as the nitrogen source is described. The method features direct detrifluoromethylation, broad substrate scopes, and excellent selectivity control, representing a new shortcut for constructing the nitrile group involving C-CF3 σ-bond cleavage.

Synthesis of 2-oxindoles via 'transition-metal-free' intramolecular dehydrogenative coupling (IDC) of sp2 C-H and sp3 C-H bonds

Kumar, Nivesh,Ghosh, Santanu,Bhunia, Subhajit,Bisai, Alakesh

supporting information, p. 1153 - 1169 (2016/07/06)

The synthesis of a variety of 2-oxindoles bearing an all-carbon quaternary center at the pseudo benzylic position has been achieved via a 'transition-metal-free' intramolecular dehydrogenative coupling (IDC). The construction of 2-oxindole moieties was carried out through formation of carbon-carbon bonds using KOt-Bu-catalyzed one pot C-alkylation of β-N-arylamido esters with alkyl halides followed by a dehydrogenative coupling. Experimental evidences indicated toward a radical-mediated path for this reaction.

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