Results 21 to 30 of about 42,464 (282)
Progress in metathesis chemistry [PDF]
AT_PUBLICATION
Karol Grela, Anna Kajetanowicz
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The allylic chalcogen effect in olefin metathesis
Olefin metathesis has emerged as a powerful tool in organic synthesis. The activating effect of an allylic hydroxy group in metathesis has been known for more than 10 years, and many organic chemists have taken advantage of this positive influence for ...
Yuya A. Lin, Benjamin G. Davis
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This account presents the importance of ruthenium-catalysed alkene cross-metathesis for the catalytic transformations of biomass derivatives into useful intermediates, especially those developed by the authors in the Rennes (France) catalysis team in ...
Dixneuf Pierre H. +2 more
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Taking Olefin Metathesis to the Limit: Stereocontrolled Synthesis of Trisubstituted Alkenes
International audienceIn this Account, we share the story of the development of catalytic olefin metathesis processes that efficiently deliver a wide range of acyclic and macrocyclic E- or Z-trisubstituted alkenes.
Liu, Qinghe +11 more
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New Approaches to Olefin Cross-Metathesis
New methodology for the selective cross-metathesis (CM) of terminal olefins employing ruthenium benzylidene 1 is described. CM with symmetric internal olefins was found to provide a useful means for homologating terminal olefins to protected allylic ...
Helen E. Blackwell (1247094) +5 more
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Highly active alkyne metathesis catalysts operating under open air condition
Alkyne metathesis catalysts usually suffer from high moisture/air sensitivity, which limit their wide applicability. Here, the authors report efficient alkyne metathesis catalysts that can operate under open-air conditions with a broad functional group ...
Yanqing Ge +8 more
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This mini-review summarizes the applications of olefin metathesis in synthesis and functionalization of polyhedral oligomeric silsesquioxanes (POSS) and POSS-containing polymeric materials.
Patrycja Żak, Cezary Pietraszuk
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Recent applications of ring-rearrangement metathesis in organic synthesis
Ring-rearrangement metathesis (RRM) involves multiple metathesis processes such as ring-opening metathesis (ROM)/ring-closing metathesis (RCM) in a one-pot operation to generate complex targets.
Sambasivarao Kotha +4 more
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The prochiral 4-(allyloxy)hepta-1,6-diynes, optionally modified in the positions 1 and 7 with an alkyl or ester group, undergo a chemoselective ring-closing enyne metathesis yielding racemic 4-alkenyl-2-alkynyl-3,6-dihydro-2H-pyrans.
Viola Kolaříková +3 more
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Where r you going? A typology of long-distance metathesis of liquids
This paper offers a typological analysis of the diachronic phenomena of long-distance metathesis of liquids that thrive in the history of several Romance languages.
Eirini Apostolopoulou
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