Mechanochemistry Enabled Construction of Isoxazole Skeleton
<i>via</i>
CuO Nanoparticles Catalyzed Intermolecular Dehydrohalogenative Annulation
作者:Murugan Vadivelu、Sugirdha Sampath、Kesavan Muthu、Kesavan Karthikeyan、Chandrasekar Praveen
DOI:10.1002/adsc.202100730
日期:2021.11.9
accomplished. This chemistry is operative under the cooperative catalysis of cupric oxide nanoparticles (<50 nm) and DABCO. The key beneficial aspects of this protocol include: (i) broad substrate scope, (ii) no vigorous work-up, (iii) short reaction time, (iv) solvent-free condition, (v) commercial viability of substrates/reagents (vi) good chemical yields and selectivity. The other merit of this chemistry
通过在机械化学设置下将β-乙烯基卤化物和α-硝基羰基化合物配对,完成了异恶唑环化的脱卤化氢方法。这种化学反应在氧化铜纳米粒子 (<50 nm) 和 DABCO 的协同催化下起作用。该协议的主要有益方面包括:(i)广泛的底物范围,(ii)没有剧烈的后处理,(iii)反应时间短,(iv)无溶剂条件,(v)底物/试剂的商业可行性( vi) 良好的化学产率和选择性。这种化学反应的另一个优点是反应后 CuO 可以很容易地回收和再利用,六次运行的催化活性没有太大的下降。由于不受 β-乙烯基卤化物的限制,验证条件也对炔烃开放,用于制备异恶唑,