Depending on the presence of a suitably placed alcohol group proximal or distal to the propargylic center, a cyclo‐reorganization occurs that delivers either valuable β‐keto tetrahydropyrans (from propargylic alcohols), or cyclic dienolethers (from propargylic esters).
                                    铂升级版:Zeise的二聚体[Cl 2 Pt(CH 2 CH 2)} 2 ]催化线性炔
丙醇和酯的活化。取决于在炔丙基中心附近或末端适当放置的醇基团的存在,会发生环
重组,从而提供有价值的β-酮
四氢吡喃(来自炔
丙醇)或环状二烯醚(来自炔
丙酸酯)。