Iodoarene-catalyzed one-pot preparation of 2,4,5-trisubstituted oxazoles from alkyl aryl ketones with mCPBA in nitriles
作者:Yuhta Kawano、Hideo Togo
DOI:10.1016/j.tet.2009.05.003
日期:2009.8
aryliodonium I(III) species reacts with alkylaryl ketone to form β-keto aryliodonium species. This in turn, reacts with nitrile to form the corresponding oxazole. Iodoarene works as a catalyst. However, one equivalent of iodoarene is required because one equivalent of reactive aryliodonium I(III) species must be formed prior to the reaction with alkylaryl ketone. Then, by introducing an ionic liquid
Direct Synthesis of 2,5-Disubstituted Oxazoles through an Iodine-Catalyzed Decarboxylative Domino Reaction
作者:Wei Xu、Ulrich Kloeckner、Boris J. Nachtsheim
DOI:10.1021/jo400753n
日期:2013.6.21
An efficient iodine-catalyzed synthesis of highly substituted oxazoles is presented. Starting from readily available aryl methylketones, β-keto esters, or styrenes, in combination with α-amino acids as amine-containing coupling partners, the corresponding 2-alkyl-5-aryl- substituted oxazoles were obtained in up to 80% yield via a decarboxylative domino reaction.
Heteroaryl substituted spirocyclic sulfamides for inhibition of gamma secretase
申请人:Collins James Ian
公开号:US20080070895A1
公开(公告)日:2008-03-20
Compounds of formula I are disclosed:
in which X is a 5-membered heteroaryl ring and R is as defined herein. The compounds are inhibitors of the processing of APP by gamma-secretase, and hence are useful in the treatment or prevention of Alzheimer's disease.
A novel and direct synthesis of 2-alkyl-5-aryl disubstituted oxazoles
作者:Jong Chan Lee、Taiyoung Hong
DOI:10.1016/s0040-4039(97)10362-8
日期:1997.12
A direct and efficient method for the preparation of 2-alkyl-5-aryl disubstituted oxazoles was realized by reaction of aromatic alpha-methyl ketones with various aliphatic nitriles in the presence of Tl(OTf)(3). (C) 1997 Elsevier Science Ltd.
Sulphamides for Treatment of Cancer
申请人:Lewis Huw David
公开号:US20090197904A1
公开(公告)日:2009-08-06
Bridged bicyclic sulphamides of formula (I) are disclosed for treatment of cancer.