Scandium(iii) triflate immobilised in ionic liquids: a novel and recyclable catalytic system for Friedel–Crafts alkylation of aromatic compounds with alkenes
作者:Choong Eui Song、Eun Joo Roh、Woo Ho Shim、Jung Hoon Choi
DOI:10.1039/b005335j
日期:——
Scandium(III) triflate catalysed Friedel–Crafts alkylation of aromatic compounds with alkenes proceeded readily in the hydrophobic ionicliquid solvents based on 1,3-dialkylimidazolium salts with easy catalyst/solvent recycling, whereas these reactions did not occur in common organic solvents, water or hydrophilic ionicliquids at all.
[2+4] Cycloaddition of η6-(styrene)chromium tricarbonyl and conjugated dienes
作者:A. N. Artemov、E. V. Sazonova、M. V. Revin、K. V. Rybkin、M. A. Lazarev、V. I. Faerman
DOI:10.1007/s11172-011-0322-5
日期:2011.10
Cycloaddition of η6-(styrene)chromium tricarbonyl to hexa-2,4-diene or cyclopentadiene afford the Diels-Alder adducts with retention of the Cr(CO)3 group, whereas cyclohexa-1,3-diene undergoes aromatization to give η6-(benzene)chromium tricarbonyl. The counter synthesis of these (arene)chromium tricarbonyl derivatives from uncoordinated adducts of the Diels-Alder reaction and chromium hexacarbonyl
Novel, Efficient, Palladium-Based System for the Polymerization of Norbornene Derivatives: Scope and Mechanism
作者:April D. Hennis、Jennifer D. Polley、Gregory S. Long、Ayusman Sen、Dmitry Yandulov、John Lipian、George M. Benedikt、Larry F. Rhodes、John Huffman
DOI:10.1021/om010232m
日期:2001.6.1
5-Cyclooctadiene)(CH3)Pd(Cl)], when reacted in situ with 1 equiv of a monodentate phosphine ligand and 1 equiv of the complex Na+[3,5-(CF3)2C6H3]4B- was found to catalyze the vinyl addition polymerization of norbornene derivatives, including those with pendant oxygen functionalities. For norbornene, a polymerization rate of 1000 tons norbornene/mol Pd·h was observed at 25 °C. For several norbornene derivatives
MAJCHRZAK, MICHAEL W.;WARKENTIN, JOHN, J. PHYS. ORG. CHEM., 3,(1990) N, C. 339-345
作者:MAJCHRZAK, MICHAEL W.、WARKENTIN, JOHN
DOI:——
日期:——
Blends and alloys of polycyclic polymers
申请人:B. F. Goodrich Company
公开号:US06294616B1
公开(公告)日:2001-09-25
Polycyclic addition polymers derived from norbornene-type monomers are mixed with a variety of other polymers to generate families of new blends, alloys, and block copolymers.