Manganese-Promoted Oxidative Cyclization of Unsaturated Oximes Using Molecular Oxygen in Air under Ambient Conditions
作者:Daisuke Yamamoto、Takuto Oguro、Yuuki Tashiro、Masayuki Soga、Kazuhito Miyashita、Yoshiaki Aso、Kazuishi Makino
DOI:10.1002/ejoc.201600998
日期:2016.11
A highly efficient manganese-promoted oxidative cyclization of unsaturated oximes to afford the corresponding 4,5-dihydroisoxazoline alcohols was developed. A very low loading (generally 0.1–0.2 mol-%) of Mn(acac)3 (acac = acetylacetonate) promoted the oxidative cyclization through the direct incorporation of molecular oxygen present in air (open flask) at room temperature.
开发了一种高效的锰促进的不饱和肟氧化环化,以提供相应的 4,5-二氢异恶唑啉醇。Mn(acac)3(acac = 乙酰丙酮化物)的负载非常低(通常为 0.1–0.2 mol-%)通过在室温下直接掺入空气(开口烧瓶)中存在的分子氧来促进氧化环化。