Lipshutz-type bis(amido)argentates for directed <i>ortho</i> argentation
作者:Noriyuki Tezuka、Keiichi Hirano、Andrew J. Peel、Andrew E. H. Wheatley、Kazunori Miyamoto、Masanobu Uchiyama
DOI:10.1039/c9sc06060j
日期:——
aromatic functionalization via unprecedented directed ortho argentation (DoAg). X-Ray crystallographic analysis showed that 3 takes a structure analogous to that of the corresponding Lipshutz cuprate. DoAg with this TMP-Ag-ate afforded multifunctional aromatics in high yields in processes that exhibited high chemoselectivity and compatibility with a wide range of functional groups. These included organometallics-
双(酰胺基)银盐(TMP)2 Ag(CN)Li 2(3,TMP-Ag-酸盐; TMP = 2,2,6,6-四甲基哌啶子基)被设计为通过空前的定向原位化学键进行化学选择性芳族官能化的工具(D o Ag)。X射线晶体学分析表明3具有与相应的Lipshutz铜酸盐类似的结构。d Ø具有这种TMP-Ag-酸酯的Ag在具有高化学选择性和与各种官能团相容性的工艺中,以高收率提供了多官能芳烃。这些包括对有机金属和过渡金属敏感的取代基,例如甲酯,醛,乙烯基,碘,(三氟甲磺酰基)氧基和硝基。白蚁类药物与各种亲电试剂显示出良好的反应性。硫属元素(S,Se和Te)的安装和偶氮偶合反应也有效进行。
Photoinduced Phosphorylation/Cyclization of Cyanoaromatics for Divergent Access to Mono- and Diphosphorylated Polyheterocycles
described. Importantly, these photocatalytic transformations feature good functional group tolerance and high regio- and chemoselectivities undermild reaction conditions. These findings might stimulate the exploration of new photocatalytic utilizations of P(O)–Hcompounds by employing CN-containing substrates as the radical acceptors.