Medina-Gil Tania, Sadurní Anna, Hammarback L Anders, Echavarren Antonio M
Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain.
Departament de Química Orgànica i Analítica, Universitat Rovira i Virgili (URV), C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain.
ACS Catal. 2023 Aug 1;13(16):10751-10755. doi: 10.1021/acscatal.3c02461. eCollection 2023 Aug 18.
Acetylene gas is an important feedstock for chemical production, although it is underutilized in organic synthesis. We have developed an intermolecular gold(I)-catalyzed alkyne/alkene reaction of -allylphenols with acetylene gas that gives rise to chromanes by a stereospecific aryloxycyclization through the nucleophilic regioselective opening of cyclopropyl gold(I)-carbene intermediates. The synthetic application of this method was demonstrated in the late-stage functionalization of the natural product lapachol.
乙炔气体是化学生产的重要原料,尽管它在有机合成中未得到充分利用。我们开发了一种分子间金(I)催化的 - 烯丙基酚与乙炔气体的炔烃/烯烃反应,该反应通过环丙基金(I) - 卡宾中间体的亲核区域选择性开环,通过立体选择性芳氧基环化生成色满。该方法的合成应用在天然产物拉帕醇的后期官能团化中得到了证明。