Results 221 to 230 of about 4,566,251 (289)
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Tandem dienyne cross-metathesis/ring-closing metathesis
Tetrahedron Letters, 2001Abstract Tandem enyne cross-metathesis/ring-closing metathesis between terminal alkynes and 1,5-hexadiene has been demonstrated using the 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene-substituted ruthenium benzylidene complex. Synthesis of 2-substituted 1,3-cyclohexadienes using this one step tandem reaction is reported.
Jason A Smulik, Steven T Diver
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Chemical & Engineering News Archive, 2007
OLEFIN CROSS-METATHESIS , the coupling of two distinct alkenes, is a useful synthetic organic reaction, but it has only rarely been achieved on solid phase. Researchers have now found that proper spacing between the polymer support and the tethered alkene makes the solid-phase reaction more feasible.
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OLEFIN CROSS-METATHESIS , the coupling of two distinct alkenes, is a useful synthetic organic reaction, but it has only rarely been achieved on solid phase. Researchers have now found that proper spacing between the polymer support and the tethered alkene makes the solid-phase reaction more feasible.
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2007
Olefin cross-metathesis has become an indispensable tool for efficient carbon–carbon bond formation. Fundamental studies on functional group tolerance and an understanding of the steric and electronic factors crucial to product selectivity have led to the development of an empirical model for reaction design.
Grubbs, R. H. +2 more
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Olefin cross-metathesis has become an indispensable tool for efficient carbon–carbon bond formation. Fundamental studies on functional group tolerance and an understanding of the steric and electronic factors crucial to product selectivity have led to the development of an empirical model for reaction design.
Grubbs, R. H. +2 more
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ChemInform Abstract: Cross‐Metathesis
ChemInform, 1999AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Susan E. Gibson, Stephen P. Keen
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Olefin cross-metathesis with vinyl halides
Chemical Communications, 2008The first successful example of olefin cross-metathesis with chloroalkenes is reported.
Volodymyr, Sashuk +3 more
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Two-directional ring-opening cross-metathesis
Chemical Communications, 2009Two-directional ring-opening cross-metathesis of a range of cyclic alkenes with a variety of electron deficient alkenes has been accomplished; it was found that the process is quite general and gives complete selectivity for the E,E-dienes, making this a very useful and high-yielding protocol for two-directional chain synthesis.
Stephen J, Roe +4 more
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Recent Developments in Olefin Cross‐Metathesis
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Stephen J, Connon, Siegfried, Blechert
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ACS Applied Energy Materials, 2019
A series of cross-linked (XL) anion-exchange membranes (AEMs) were synthesized on the basis of the ring opening metathesis polymerization (ROMP) of norbornene monomers (rPNB).
Wanting Chen +5 more
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A series of cross-linked (XL) anion-exchange membranes (AEMs) were synthesized on the basis of the ring opening metathesis polymerization (ROMP) of norbornene monomers (rPNB).
Wanting Chen +5 more
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Butadiene from acetylene–ethylene cross-metathesis
Chemical Communications, 2015Direct synthesis of butadiene from acetylene and ethylene, via enyne cross-metathesis, is demonstrated with commercial ruthenium carbene catalysts.
Trotus, I. +4 more
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Hexafunctionalized Borromeates Using Olefin Cross Metathesis
Organic Letters, 2007Employing well-established template-directed protocols, which depend upon dynamic covalent, coordinative, and noncovalent chemistry for their efficient outputs, we have synthesized, in a convergent manner, Borromeates composed of three identical macrocycles which present, diagonally in pairs, six exo-bidentate bipyridyl ligands and six endo ...
Claire R, Yates +3 more
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