readily prepared from ethynyl(phenyl)(tetrafluoroborato)-λ3-iodane via stereoselective Michael-type addition of benzoic acids in methanol in the presence of sodium benzoates, with tetrabutylammonium halides in THF at 65 °C results in a vinylic SN2 reaction to give the inverted (E)-β-benzoyloxyvinyl halides in high yields.
的治疗(ż) - (β-benzoyloxyvinyl)苯基λ 3个-iodanes,从
乙炔基(苯基)容易地制备(tetrafluoroborato)-λ 3经由立体选择性迈克尔加成的
苯甲酸在
甲醇中的
钠甲酸酯的存在-iodane与四丁基
铵卤化物在THF中于65°C进行
乙烯基S N 2反应,可以高产率得到反相的(E)-β-苯甲酰氧基
乙烯基卤化物。