applied for the first time to the direct conversion of N−H and O−H bonds into N‐ and O‐centred radicals, enabling a general and selective oxidative radical oxyamination and dioxygenation of various β,γ‐unsaturated hydrazones and oximes. In the reaction, O2 was employed not only as a terminal oxidant but also as the oxygen source. This protocol provided efficient access to the synthesis of various synthetically
N‐Chlorosuccinimide‐Promoted One‐Pot Synthesis of Substituted 4,5‐Dihydroisoxazole‐5‐methanols in Aqueous Medium
作者:Yunfei Jia、Keyume Ablajan
DOI:10.1002/adsc.202200999
日期:2023.1.24
reaction of aldoximes and allyl alcohol in the presence of K2CO3 at room temperature via a one-pot route. The reaction was achieved in water medium to introduce a low-cost direct protocol for synthesizing isoxazolines. This method offers advantages including the use of an oxidant-free and transitionmetal-free approach, broad scope of allyl alcohol and aldoxime substrates, room-temperature reaction
在此,提出了一种无催化剂合成4,5-二氢异恶唑-5-甲醇的方法,即在K 2 CO 3存在下,通过NCS介导的醛肟和烯丙醇的1,3-偶极环加成反应构建异恶唑啉。在室温下通过一锅法。该反应在水介质中实现,引入了一种低成本的直接合成异恶唑啉的方案。该方法的优点包括使用无氧化剂和无过渡金属的方法、广泛的烯丙醇和醛肟底物、室温反应、良好至更高的产率 (42–92%) 以及克-尺度合成。