Tellurium-based organic synthesis: A novel one-pot formation of 2-oxazolines from alkenes induced by amidotellurinylation
作者:Nan X. Hu、Yoshio Aso、Tetsuo Otsubo、Fumio Ogura
DOI:10.1016/0040-4039(88)85332-2
日期:1988.1
Benzenetellurinyl trifluoroacetate readily reacts with alkenes in acetonitrile in the presence of boron trifluoride etherate at 75 °C to give 2-oxazolines via amidotellurinylation.
Benzenetellurinyl acetate or trifluoroacetate in combination with ethyl carbamate effected aminotellurinylation of olefins in chloroform under reflux in the presence of boron trifluoride etherate to give ethyl [(2-phenyltelluro)alkyl]carbamates in high yields after reduction with hydrazine hydrate. This reaction was extended to cyclofunctionalization of olefinic carbamates into nitrogen heterocycles.
mixed anhydrides is described from diaryl ditellurides and phenyliodine (III) dicarboxylates. Hydrolysis of the arenetellurinic mixed anhydrides gives arenetellurinic anhydrides and a one - pot procedure involving the reaction of diaryl ditellurides with phenyliodine (III) dicarboxylates in a two - phase system of methylene chloride and aqueous solution of sodium hydroxide for the preparation of arenetellurinic