Synthesis of Conjugated Allenes through Copper-Catalyzed γ-Selective and Stereospecific Coupling between Propargylic Phosphates and Aryl- or Alkenylboronates
作者:Mingyu Yang、Natsumi Yokokawa、Hirohisa Ohmiya、Masaya Sawamura
DOI:10.1021/ol2033465
日期:2012.2.3
between propargylic phosphates and aryl- or alkenylboronates afforded aryl- or alkenyl-conjugated allenes. The reaction showed excellent functional group compatibility in both the propargylic substrates and the boronates. The reaction of an enantioenriched propargylic phosphate proceeded with excellent chirality transfer with 1,3-anti stereochemistry to give axially chiral aryl- and alkenylallenes.
炔丙基磷酸酯与芳基或链烯基硼酸酯之间的Cu催化的γ-选择性偶联反应提供了芳基或链烯基共轭的烯。该反应在炔丙基底物和硼酸酯中均显示出优异的官能团相容性。富含对映体的炔丙基磷酸酯的反应进行了出色的手性转移,并带有1,3-反立体化学,得到了轴向手性的芳基和烯基烯基。