The combination of Mo and cationic Au catalysts dramatically accelerated the rearrangement of diverse propargyl alcohols, which includes a short reaction time, mild conditions, and high product yields. A practical application to the highly challenging primary propargyl alcohols and the N-alkynyl amides is achieved.
Heteropoly Compound Catalyzed Synthesis of Both Z- and E-α,β-Unsaturated Carbonyl Compounds
An EZ switch: The cationic species of the heteropoly compounds has a critical impact on the Z/E selectivity of the Meyer–Schuster rearrangement of propargyl alcohols (see scheme). The isolation of the thermodynamically unfavorable Z‐α,β‐unsaturatedcarbonylcompounds is notable. The high Z selectivities were obtained at a reaction temperature as high as 50 °C.
一个 EZ 开关:杂多化合物的阳离子物质对一个临界冲击ž / é炔丙基醇的迈耶-舒斯特重排反应的选择性(见方案)。分离出热力学上不利的Z -α,β-不饱和羰基化合物。在高达 50°C的反应温度下可获得较高的Z选择性。