Palladium-catalyzed ortho-arylation of benzoic acid derivatives via C–H bond activation using an aminoacetic acid bidentate directing group
摘要:
A highly efficient protocol for the palladium-catalyzed ortho-arylation of benzoic acid derivatives by aryl iodides is described with an aminoacetic acid based N,O bidentate directing group. This protocol can be applied to various benzoyl aminoacetic acids and aryl iodides with both electron-donating and electron-withdrawing groups. Remarkably, the nature of a new directing group drives selective C-H bond activation to afford only monoarylation products in good to excellent yields. (C) 2015 Published by Elsevier Ltd.
[EN] OXAZOLE DERIVATIVES, THEIR PREPARATION AND THEIR USE AS CYTOKINE INHIBITORS<br/>[FR] DERIVES D'OXAZOLE, LEUR PREPARATION ET LEUR UTILISATION COMME INHIBITEURS DE CYTOKINES
申请人:SANKYO CO
公开号:WO2002064558A2
公开(公告)日:2002-08-22
Novel oxazole derivatives which have activity in inhibiting inflammatory cytokines, particularly IL-4, pharmaceutical compositions comprising said oxazole derivatives and methods of prophylaxis and treatment of diseases mediated by cytokines, particularly allergic diseases.
Reductive ipso-radical cyclization onto aromatic rings of five-membered alicyclic amino acids bearing N-(2-phenyl)benzoyl groups by photoinduced electron transfer promoted decarboxylation
A new radicalcyclization has been developed for the one-step synthesis of spiro dihydroisoquinolinone derivatives from alicyclic amino acids bearing N-(2-phenyl)benzoyl groups through photoinduced electron transfer (PET)-promoted decarboxylation. Reductive ipso-radical cyclization onto a benzene ring by an alkyl radical is achieved under mild conditions for the first time, although the substrates
A highly efficient protocol for the palladium-catalyzed ortho-arylation of benzoic acid derivatives by aryl iodides is described with an aminoacetic acid based N,O bidentate directing group. This protocol can be applied to various benzoyl aminoacetic acids and aryl iodides with both electron-donating and electron-withdrawing groups. Remarkably, the nature of a new directing group drives selective C-H bond activation to afford only monoarylation products in good to excellent yields. (C) 2015 Published by Elsevier Ltd.