作者:Haitao Qin、Wangshui Cai、Shuang Wang、Ting Guo、Guigen Li、Hongjian Lu
DOI:10.1002/anie.202107356
日期:2021.9.13
Examples are provided of deletion of nitrogen from natural products, synthesis of chiral O-heterocycles from commercially available chiral β-aminoalcohols, formal inert C−H functionalization through a sequence of N-directed C−H functionalization and N-atom deletion reactions in which the N-atom can serve as a traceless directing group.
切除仲胺中的氮并将两个残留片段偶联起来是一种骨架编辑策略,可用于构建具有新骨架的分子,但在很大程度上尚未被探索。在这里,我们报告了一种从 N-杂环中切除 N-原子的通用方法。该过程使用容易获得的 N-杂环作为底物,并通过 N-磺酰叠氮作用进行,然后氨磺酰叠氮化物中间体的重排,提供各种环状产物。提供了从天然产物中删除氮、从市售手性 β-氨基醇合成手性 O-杂环、通过一系列 N 导向的 CH 官能化和 N 原子缺失反应的形式惰性 CH 官能化的例子其中 N 原子可以作为一个无痕导向群。
Synthesis of renewable alkylated naphthalenes with benzaldehyde and angelica lactone
作者:Ran Wang、Guangyi Li、Jilei Xu、Aiqin Wang、Yu Cong、Xiaodong Wang、Tao Zhang、Ning Li
DOI:10.1039/d1gc02119b
日期:——
Herein, we report a new route for the synthesis of renewable alkylated naphthalenes (ANs) with benzaldehyde and angelica lactone, two platform compounds that can be derived from lignocellulose.
AbstractWe report a rare case of alkene transfer hydrogenation using a main‐group compound instead of a transition‐metal complex as catalyst. We disclosed that 1,4‐cyclohexadiene can be used as H2 surrogate towards olefin reduction in the presence of [IPrGaCl2][SbF6]. Hydrogenative cyclizations have also been carried out because this cationic gallium complex is also a potent hydroarylation catalyst.
Sodium Catalyzed Reactions. II.<sup>1</sup> Side-chain Ethylation of Alkyl Aromatic Hydrocarbons Catalyzed by Sodium