Synthesis of [n]polynorbornanes with differing edge substitution: a new class of regioselectively addressable frameworkThe term RAFT has been coined to describe such frameworks; RAFT is an acronym for Regioselectively Addressable Functionalised Template.1
Rhenium-catalyzed [2+2] Cycloadditions of Norbornenes with Internal and Terminal Acetylenes
作者:Yoichiro Kuninobu、Peng Yu、Kazuhiko Takai
DOI:10.1246/cl.2007.1162
日期:2007.9.5
Treatment of norbornenes with internal and terminal acetylenes in the presence of a catalytic amount of [ReBr(CO)3(thf)]2 gave cyclobutene derivatives in good to excellent yields.
The Design of Inner-Functionalised U-Shaped Cavity Molecules: Role of Phenyl Substituents at the 1,3-Position of Isobenzofurans and Oxa-Bridges in the Dienophile as Stereochemical Controlling Elements
作者:Ronald Warrener、Shudong Wang、Douglas Butler、Richard Russell
DOI:10.1055/s-1997-700
日期:——
1,3-Diphenylisobenzofuran reacts with fused mono- and bis-norbornenes, 7-oxanorbornenes and cyclobutene-1,2-diesters with high stereospecifity whereas the corresponding isobenzofuran cycloadditions produce mixtures; this provides a basis for regulating geometry in the construction of polyalicyclic nanostructures.
Microwave-Accelerated Ruthenium-Catalyzed [2<font>π</font> + 2<font>π</font>] Cycloadditions of Dimethylacetylene Dicarboxylate with Norbornenes
作者:Davor Margetić、Pavle Trošelj、Yasujiro Murata
DOI:10.1080/00397911.2010.481744
日期:2011.3.28
Abstract An efficient and convenient procedure has been developed for the ruthenium-catalyzed [2π + 2π] cycloadditions of dimethylacetylene dicarboxylate with norbornenes. Reaction is significantly accelerated in microwave conditions, while the commonly used benzene solvent was replaced by environmentally benign tetrahydrofuran.
CpRuCl(PPh<sub>3</sub>)<sub>2</sub>/MeI Catalyst System for the [2+2] Cycloaddition of Norbornenes with Disubstituted Alkynes
作者:Alphonse Tenaglia、Laurent Giordano
DOI:10.1055/s-2003-42127
日期:——
CpRu(PPh3)2I generated in situ by mixing CpRu(PPh3)2Cl and methyl iodide catalyzed the [2+2] cycloaddition of norbornene (or norbornadiene) and disubtituted alkynes to afford functionalized cyclobutenes.
Dipolar Cycloaddition Reactions of Azomethine Ylides Generated by endocyclic-exocyclic 1,3-dipole Rearrangement
作者:Davor Margetić、Ronald N. Warrener、Douglas N. Butler、Craig M. Holland
DOI:10.1002/jhet.2167
日期:2015.9
Dipolarcycloaddition of polycyclic azomethineylides, in which the central nitrogen atom is part of a pyrrolidine ring and bears a methoxycarbonyl group with norbornenes has been shown to produce two main types of products featuring pyrrolizidine rings. In conjuction with results of quantum chemical calculations (B3LYP), mechanistic rationale was postulated. The key reaction step is unprecedented