Iodoarene-mediated one-pot preparation of 2,5-disubstituted and 2,4,5-trisubstituted oxazoles from alkyl aryl ketones with oxone in nitriles
作者:Yoshihide Ishiwata、Hideo Togo
DOI:10.1016/j.tet.2009.09.109
日期:2009.12
aryliodonium I(III) species reacts with alkylaryl ketone to generate β-keto iodonium species. Then, β-keto iodonium species reacts with nitrile to produce the corresponding oxazole. In principle, iodoarene works as a catalyst. However, 1 equiv of iodoarene is required because 1 equiv of reactive aryliodonium I(III) species must be formed before the reaction with alkylaryl ketone.
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.