Stereoselective addition reactions of alkynes with benzenetellurinyl trifluoromethanesulfonate in acetonitrile: organotellurium-mediated one-pot synthesis of oxazoles from internal alkynes
作者:Takahiro Fukumoto、Yoshio Aso、Tetsuo Otsubo、Fumio Ogura
DOI:10.1039/c39920001070
日期:——
Benzenetellurinyl trifluoromethanesulfonate in conjunction with acetonitrile underwent an E-stereoselective amidotellurinylation reaction with alkynes, but the addition products from terminal alkynes tended to isomerize thermally to (Z)-β-acetamidovinyl phenyl telluroxide, whereas those from internal alkynes were transformed into oxazoles via a spontaneous intramolecular cyclization.
苯并碲基三氟甲磺酸盐与乙腈在与炔烃进行E型选择性酰氨基碲化反应中,端炔的加成产物倾向于热异构化为(Z)-β-乙酰氨基乙烯基苯基碲氧化物,而内炔的加成产物则通过自发分子内环化转化为噁唑类化合物。