99585-13-4Relevant articles and documents
INHIBITORS OF INFLUENZA VIRUS REPLICATION
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Paragraph 00242, (2020/06/19)
Methods of inhibiting the replication of influenza viruses in a biological sample or patient, of reducing the amount of influenza viruses in a biological sample or patient, and of treating influenza in a patient, comprises administering to said biological
Cobalt-catalyzed methoxycarbonylation of substituted dichlorobenzenes as an example of a facile radical anion nucleophilic substitution in chloroarenes
Khaibulova, Tatyana S.,Boyarskaya, Irina A.,Larionov, Evgeny,Boyarskiy, Vadim P.
, p. 5876 - 5897 (2014/06/10)
A thorough mechanistic study on cobalt-catalysed direct methoxycarbonylation reactions of chlorobenzenes in the presence of methyl oxirane on a wide range of substrates, including poly-and monochloro derivatives with multiple substituents, is reported. The results demonstrate that the reaction is potentially useful as it proceeds under very mild conditions (t = 62 °C, PCO = 1 bar) and converts aryl chlorides to far more valuable products (especially ortho-substituted benzoic acids and esters) in high yields. This transformation also offers another opportunity for the utilization of environmentally harmful polychlorinated benzenes and biphenyls (PCBs). This study is the first to discover an unexpected universal positive ortho-effect: the proximity of any substituent (including Me, Ph, and MeO groups and halogen atoms) to the reaction centre accelerates the methoxycarbonylation in chlorobenzenes. The effect of the ortho-substituents is discussed in detail and explained in terms of a radical anion reaction mechanism. The advantages of the methoxycarbonylation as a model for the mechanistic study of radical anion reactions are also illustrated.
Chemoselective sp 2-sp3 cross-couplings: Iron-catalyzed alkyl transfer to dihaloaromatics
Malhotra, Sushant,Seng, Pamela S.,Koenig, Stefan G.,Deese, Alan J.,Ford, Kevin A.
supporting information, p. 3698 - 3701 (2013/08/23)
The chemoselective functionalization of a range of dihaloaromatics with methyl, cyclopropyl, and higher alkyl Grignard reagents via iron-catalyzed cross-coupling is described. The site selectivity of C-X (X = halogen) activation is determined by factors such as the position of the halogen on the ring, the solvent, and the nucleophile. A one-pot protocol for the chemoselective synthesis of mixed dialkyl heterocycles is achieved solely employing iron catalysis.