Photoinduced electron transfer reaction of cyclopropanone acetals with arylmethyl methanesulfonate: generation of β-keto radical species and application to C–C bond formation
A simple cobalt‐catalyzed reductive coupling protocol allowing the synthesis of functionalized diarylmethanes from benzyl mesylate is described. The possibility to directly use the benzyl alcohol as a result of a two‐step reaction is also presented. This method tolerates a variety of functional groups. A benzyl radical is likely involved.
Selective methylene C–H oxidation for the synthesis of alcohols with a broad scope and functional group tolerance is challenging due to the high proclivity for further oxidation of alcohols to ketones. Here, we report the selective synthesis of benzylic alcohols employing bis(methanesulfonyl) peroxide as an oxidant. We attempt to provide a rationale for the selectivity for monooxygenation, which is
[EN] PROCESS FOR THE PREPARATION OF IMATINIB AND SALTS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'IMATINIB ET DE SES SELS
申请人:ARCH PHARMALABS LTD
公开号:WO2011070588A1
公开(公告)日:2011-06-16
Disclosed herein is a process for preparation of imatinib free base which comprises condensing 4-Methyl-N-(4-pyridin-3-yl-pyrimidin-2-yl)-benzene-1,3-diamine with 4-(4-Methyl-piperazin-1-ylmethyl)-benzoic acid ester in the presence of base including organic bases and inorganic bases in an organic solvent to form imatinib.
Alternative Approach toward the Generation of Benzylic Zinc Reagent: Direct Oxidative Addition of Active Zinc into the Carbon–Oxygen Bond of Benzyl Mesylates
作者:Seung-Hoi Kim、Hye-Soo Jung
DOI:10.1055/s-0034-1379880
日期:——
PROCESS FOR THE PREPARATION OF IMATINIB AND SALTS THEREOF