Generation, Detection, and Reaction of Ammonium Ylides in Reactions of [2-[(Dimethylamino)alkyl]phenyl]phenylcarbenes
摘要:
Generation of diphenylcarbene (DPC) bearing a 2-(N,N-dimethylamino)methyl group in CHCl3 produced (N,N-dimethylamino)phenylisoindolium chloride and dichlorocarbene, which was trapped by added cyclohexene, while DPC having a 2-(N,N-dimethylamino)ethyl group afforded not only 3-phenyl-4-(N,N-dimethylamino)indane but also 2-[2-(N,N-dimethylamino)benzyl]styrene.
Iron-catalyzed alkylative cyclization of alkenes bearing oxygen nucleophiles with secondary and tertiary alkyl bromides through carbon–carbon and carbon–oxygen bond formations has been developed. A broad substrate scope is an attractive feature of this synthetic method, providing a variety of potentially bioactive five- and six-membered oxygen-containing heterocycles. The reaction pathway is proposed
Copper-Catalyzed Modular Amino Oxygenation of Alkenes: Access to Diverse 1,2-Amino Oxygen-Containing Skeletons
作者:Brett N. Hemric、Andy W. Chen、Qiu Wang
DOI:10.1021/acs.joc.8b02885
日期:2019.2.1
Copper-catalyzed alkeneamino oxygenation reactions using O-acylhydroxylamines have been achieved for a rapid and modular access to diverse 1,2-amino oxygen-containing molecules. This transformation is applicable to the use of alcohols, carbonyls, oximes, and thio-carboxylic acids as nucleophiles on both terminal and internal alkenes. Mild reaction conditions tolerate a wide range of functional groups
Switching of chemoselectivity for organolithium reactions between halogen-lithium exchange reaction with carbolithiation was achieved in a flow microreactor.
[EN] MACROCYCLIC FLU ENDONUCLEASE INHIBITORS<br/>[FR] INHIBITEURS MACROCYCLIQUES D'ENDONUCLÉASE DE LA GRIPPE
申请人:JANSSEN BIOPHARMA INC
公开号:WO2020075080A1
公开(公告)日:2020-04-16
The present invention relates to macrocyclic pyridotriazine derivatives of formula (I) and the pharmaceutically acceptable salts, solvates or or polymorph thereof, and the use of such compounds as a medicament, in particular in the prevention and/or treatment of viral infections caused by viruses belonging to the Orthomyxoviridae famiIy. The present invention furthermore relates to pharmaceutical compositions or combination preparations of the compounds, and to the compositions or preparations for use as a medicament, more preferably for the prevention or treatment of viral infections caused by viruses belonging to the Orthomyxoviridae family.
Divergent Synthesis of Isochroman-4-ols, 1,3-Dihydroisobenzofurans, and Tetrahydro-2H-indeno[2,1-b]furan-2-ones via Epoxidation/Cyclization Strategy of (E)-(2-Stilbenyl/Styrenyl)methanols
could be synthesized via an epoxidation/cyclization strategy. Indenes, readily accessible from the same starting materials, could undergo epoxidation/ring-opening/cyclization to provide tetrahydro-2H-indeno[2,1-b]furan-2-ones. Stilbene/styrene/indene epoxidation by m-CPBA or DMDO converted the nucleophilic olefin into the electrophilic epoxide, which subsequently underwent the regioselective ring-opening
从 ( E )-(2-茋基/苯乙烯基) 甲醇开始,可以通过环氧化/环化策略合成两种不同的支架,即 isochroman-4-ols 和 1,3-dihydroisobenzofurans (phthalans)。可以从相同的起始材料轻松获得茚,可以进行环氧化/开环/环化以提供四氢-2H-茚并[2,1- b ]呋喃-2-酮。二苯乙烯/苯乙烯/茚环氧化m-CPBA 或 DMDO 将亲核烯烃转化为亲电环氧化物,随后通过羟基或酯基进行区域选择性开环,从而在新形成的立体异构中心提供具有立体控制的相应产物。反应在底物控制下进行,以排他性地产生每种产物类型。