Solid Phase Approaches to <i>N</i>-Heterocycles Using a Sulfur Linker Cleaved by SmI<sub>2</sub>
作者:Laura A. McAllister、Kristy L. Turner、Stephen Brand、Mark Stefaniak、David J. Procter
DOI:10.1021/jo060940n
日期:2006.8.1
A sulfur HASC (α-hetero-atom substituted carbonyl) linker has been utilized in solid-phase approaches to oxindoles and tetrahydroquinolones. The route to oxindoles employs the first Pummerer cyclizations on solidphase, whereas the route to tetrahydroquinolones involves a microwave-assisted Heck reaction followed by a Michael cyclization. In both cases, the linker is cleaved in a traceless fashion
Solvent-Controlled Bifurcated Cascade Process for the Selective Preparation of Dihydrocarbazoles or Dihydropyridoindoles
作者:Dong-Liang Mo、Donald J. Wink、Laura L. Anderson
DOI:10.1002/chem.201403268
日期:2014.10.6
A solvent‐controlled cascadeprocess has been identified for the dual purpose of the preparation of either dihydrocarbazoles or dihydropyridoindoles from identical N‐aryl‐α,β‐unsaturated nitrones and electron‐deficient allene starting materials. These reactions proceed smoothly under mild metal‐free conditions affording a range of two types of skeletally distinct indole‐based heterocycles in high yield
Complex Polycyclic Scaffolds by Metathesis Rearrangement of Himbert Arene/Allene Cycloadducts
作者:Jonathan K. Lam、Yvonne Schmidt、Christopher D. Vanderwal
DOI:10.1021/ol302680m
日期:2012.11.2
The intramolecular arene/allene cycloaddition first described 30 years ago by Himbert and Henn permits rapid access to strained polycyclic compounds. Alkene metathesis processes cleanly rearrange appropriately substituted cycloadducts into complex, functional-group-rich polycyclic lactams of potential utility for natural product synthesis and medicinal chemistry.
Ikeda, Masazumi; Teranishi, Hirotaka; Nozaki, Kohei, Journal of the Chemical Society. Perkin transactions I, 1998, # 10, p. 1691 - 1697