Polymeric Phosphine Ligand from Ring-Opening Metathesis Polymerization of a Norbornene Derivative. Applications in the Heck, Sonogashira, and Negishi Reactions
摘要:
The phosphine-containing polymer 1 is obtained by ruthenium-catalyzed ring-opening metathesis polymerization of the norbornene derivative 2. Polymer 1 is employed as the polymer support in the palladium-catalyzed Heck, Sonogashira, and Negishi reactions, and the corresponding (methoxymethylphenyl)diphenylphosphine (6) ligand is used for comparison. The polymer-supported catalysts retain most of their catalytic activities in these coupling reactions in the recycling processes.
Polymeric Phosphine Ligand from Ring-Opening Metathesis Polymerization of a Norbornene Derivative. Applications in the Heck, Sonogashira, and Negishi Reactions
摘要:
The phosphine-containing polymer 1 is obtained by ruthenium-catalyzed ring-opening metathesis polymerization of the norbornene derivative 2. Polymer 1 is employed as the polymer support in the palladium-catalyzed Heck, Sonogashira, and Negishi reactions, and the corresponding (methoxymethylphenyl)diphenylphosphine (6) ligand is used for comparison. The polymer-supported catalysts retain most of their catalytic activities in these coupling reactions in the recycling processes.
Structural Manifestations of the Retro Diels−Alder Reaction
作者:Brett R. Pool、Jonathan M. White
DOI:10.1021/ol006553w
日期:2000.11.1
Examination of selected cyclohexene derivatives which are fixed into the boat conformation reveals structural deviations from "normal" C-C bond distances consistent with the early stages of the retroDiels-Alder reaction.
The synthesis of epi-epoxydon utilising the Baylis–Hillman reaction
作者:Thorsten Genski、Richard J.K. Taylor
DOI:10.1016/s0040-4039(02)00529-4
日期:2002.5
-(+/-)-epi-Epoxydon was synthesised by means of a triethylaluminium/ tri-n-butylphosphine-catalysed Baylis-Hillman reaction between an O-protected epoxidised hydroxyquinol core and paraformaldehyde, constituting the first application of the Baylis-Hillman reaction to a highly functionalised beta-substituted enone. (C) 2002 Elsevier Science Ltd. All rights reserved.
Polymeric Phosphine Ligand from Ring-Opening Metathesis Polymerization of a Norbornene Derivative. Applications in the Heck, Sonogashira, and Negishi Reactions
作者:Yun-Chin Yang、Tien-Yau Luh
DOI:10.1021/jo035318z
日期:2003.12.1
The phosphine-containing polymer 1 is obtained by ruthenium-catalyzed ring-opening metathesis polymerization of the norbornene derivative 2. Polymer 1 is employed as the polymer support in the palladium-catalyzed Heck, Sonogashira, and Negishi reactions, and the corresponding (methoxymethylphenyl)diphenylphosphine (6) ligand is used for comparison. The polymer-supported catalysts retain most of their catalytic activities in these coupling reactions in the recycling processes.