One-pot method for α-phenylation of ketones using isoxazolidine and triphenylaluminum
摘要:
The efficient one-pot umpolung alpha-phenylation of ketones via N-alkenylisoxazolidine is described. When the various ketones are treated with triphenylaluminum prepared from phenylmagnesium chloride and AlCl3 in the presence of isoxazolidine, the desired products are obtained in good to moderate yield. This method is equivalent to a direct alpha-arylation reaction of carbonyl groups. (C) 2012 Elsevier Ltd. All rights reserved.
[EN] CYCLOHEXYL-AZETIDINYL ANTAGONISTS OF CCR2<br/>[FR] ANTAGONISTES DU CCR2 À BASE DE CYCLOHEXYL-AZÉTIDINYLE
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2011159854A1
公开(公告)日:2011-12-22
The present invention comprises compounds of Formula (I). Wherein: R1, R2, R4, J, Q, and A are as defined in the specification. The invention also comprises a method of preventing, treating or ameliorating a syndrome, disorder or disease, wherein said syndrome, disorder or disease is type II diabetes, obesity and asthma. The invention also comprises a method of inhibiting CCR2 activity in a mammal by administration of a therapeutically effective amount of at least one compound of Formula (I).
The vicinal functionalization of N-alkoxyenamines, derived in situ from aldehydes and isoxazolidines, has been achieved with the formation of two new carbon–carbon bonds by utilizing an organo-aluminum reagent and subsequent allylmagnesium bromide or tributyltin cyanide as external carbon-centered nucleophiles. By changing the second carbon nucleophile, various amine derivatives were obtained in good
SUBSTITUTED N-ARYLETHYL-2-AMINOQUINOLINE-4-CARBOXAMIDES AND USE THEREOF
申请人:Bayer Aktiengesellschaft
公开号:US20200157073A1
公开(公告)日:2020-05-21
The present application relates to novel substituted N-arylethyl-2-aminoquinoline-4-carboxamide derivatives, to processes for preparation thereof, to the use thereof alone or in combinations for treatment and/or prevention of diseases, and to the use thereof for production of medicaments for treatment and/or prevention of diseases, especially for treatment and/or prevention of fibrotic and inflammatory disorders.
An umpolung strategy has been developed for the synthesis of β,γ-unsaturatedketones utilizing nucleophilic β-alkenylation of N-alkoxyenamines, which are prepared in situ fromketones and isoxazolidine, with alkenyl aluminum reagents. Various β,γ-unsaturatedketones have been prepared following this simple procedure under mild conditions.