Selective Oxidative Decarbonylative Cleavage of Unstrained C(<i>sp</i><sup>3</sup>)–C(<i>sp</i><sup>2</sup>) Bond: Synthesis of Substituted Benzoxazinones
作者:Ajay Verma、Sangit Kumar
DOI:10.1021/acs.orglett.6b02142
日期:2016.9.2
A transition metal (TM)-free practical synthesis of biologically relevant benzoxazinones has been established via a selective oxidative decarbonylative cleavage of an unstrained C(sp3)–C(sp2) bond employing iodine, sodium bicarbonate, and tbutyl hydroperoxide in DMSO at 95 °C. Control experiments and Density Functional Theory (DFT) calculations suggest that the reaction involves a [1,5]H shift and
通过使用碘,碳酸氢钠和叔丁基过氧化氢在DMSO中对未应变的C(sp 3)-C(sp 2)键进行选择性氧化脱羰裂解,建立了与生物相关的苯并恶嗪酮的无过渡金属(TM)实用合成方法在95°C下。控制实验和密度泛函理论(DFT)计算表明,该反应涉及[1,5] H转变和CO气体挤出作为关键步骤。还使用PMA–PdCl 2建立了CO的挤出。