C–C bond-forming reactions of ground-state aryl halides under reductive activation
作者:Katie J. Emery、Tell Tuttle、Alan R. Kennedy、John A. Murphy
DOI:10.1016/j.tet.2016.05.083
日期:2016.12
Under basic conditions aryl halides can undergo SRN1 reactions, BHAS reactions and benzyne formations. Appropriate complex substrates afford an opportunity to study inherent selectivities. SRN1 reactions are usually favoured under photoactivated conditions, but this paper reports their success using ground-state and transition metal-free conditions. In benzene, the enolate salt 12, derived by deprotonation
在碱性条件下,芳基卤化物可以经历S RN 1反应,BHAS反应和苯炔形成。适当的复杂底物提供了研究固有选择性的机会。S RN 1反应通常在光活化条件下受到青睐,但本文报道了在基态和无过渡金属条件下的成功应用。在苯中,二酮哌嗪11去质子化而得的烯醇盐12充当电子供体,并有助于引发反应,但在DMSO中,则不是必需的。将结果与最近在类似基材上进行的光化学研究进行比较和对比。一个特别的区别是在相对温和的热条件下氢化物穿梭反应的普遍性。