Synthetically useful alpha-methanesulfonyloxy methyl ketones are readily prepared in one-step from terminal allenes in fair to good yields. The chemistry relies on a gold-catalyzed intermolecular oxidation of the 1,2-diene unit using 3,5-dichloropyridine N-oxide as the oxidant. The reaction tolerates a range of functional groups and shows excellent regioselectivity.
合成有用的 α-
甲磺酰氧基甲基酮可以很容易地一步从末端
丙二烯以一般到良好的产率制备。该
化学过程依赖于
金催化的 1,2-二烯单元的分子间氧化,使用 3,5-二
氯吡啶 N-氧化物作为氧化剂。该反应耐受一系列官能团并显示出优异的区域选择性。