烷基溴拴系的亚烷基亚环丙烷的分子内自由基串联环化反应镍催化合成苯并[ b ]萘并[1,2- d ]氮杂
摘要:
本文描述了Ni(II)催化的串联环丙烷丙烷开环和使用未活化的烷基溴-束缚的亚烷基环丙烷(ACP)对芳环进行自由基烷基化。这种成环过程显示出具有多种伯烷基溴和芳族环的广泛底物范围,在温和条件下以中等至优异的产率提供了多种苯并[ b ]萘[1,2- d ] a庚因衍生物。在包括氘标记检查在内的几个对照实验的基础上,提出了合理的反应机理。还对获得的多环产物进行了进一步的衍生化。
Catalyst-free geminal aminofluorination of <i>ortho</i>-sulfonamide-tethered alkylidenecyclopropanes <i>via</i> a Wagner–Meerwein rearrangement
作者:Xing Fan、Qiang Wang、Yin Wei、Min Shi
DOI:10.1039/c8cc05634j
日期:——
give a fluorinated cyclopropylcarbinyl cation and a further Wagner-Meerweinrearrangement to generate a cyclobutyl carbocation, which undergoes intramolecular nucleophilic capture by amide to forge fluorinated cyclobuta[b]indoline derivatives. A polycyclic multi-fluorinated byproduct was also formed through a Ritter-type reaction in some cases.
已经开发了无催化剂的邻-磺酰胺系的亚烷基亚环丙烷的分子内双核氨基氟化。通过与的SElectfluor两个SET过程进行该反应,得到氟化cyclopropylcarbinyl阳离子和进一步瓦格纳米尔文重排,以生成碳正离子环丁基,其通过酰胺进行分子内亲核捕获伪造氟化cyclobuta [ b ]二氢吲哚衍生物。在某些情况下,还通过Ritter型反应形成多环多氟化副产物。
Thermally‐Induced Intramolecular [4+2] Cycloaddition of Allylamino‐ or Allyloxy‐Tethered Alkylidenecyclopropanes
作者:Leyi Tao、Yin Wei、Min Shi
DOI:10.1002/asia.202100635
日期:2021.9
A novel thermally-induced intramolecular [4+2] cycloaddition of allylamino- or allyloxy-tethered alkylidenecyclopropanes for the rapid construction of polycyclic skeleton molecules.