Results 81 to 90 of about 4,618,245 (281)
Synthesis of Conjugated Linear and Cyclic Polyynes by Selective Alkyne Metathesis. [PDF]
Angew Chem Int Ed EnglThe formation of polyynes with an odd number of conjugated triple bonds is challenging, particularly for complex architectures since most established methods rely on irreversible C–C bond‐forming reactions. To address this, we have developed the synthesis of triynes via alkyne metathesis.
Escudero J +12 more
europepmc +3 more sources
Alkene Chemoselectivity in Ruthenium-Catalyzed Z-Selective Olefin Metathesis [PDF]
, 2013 Chelated ruthenium catalysts can facilitate highly chemoselective olefin metathesis. Terminal and internal Z olefins reacted selectively to form new Z olefins in the presence of internal E olefins.
Cannon, Jeffrey S., Grubbs, Robert H.
core +2 more sources
ACS Central Science, 2016 The gaseous neuromodulator H2S is associated with neuronal cell death pursuant to cerebral ischemia. As cystathionine β-synthase (CBS) is the primary mediator of H2S biogenesis in the brain, it has emerged as a potential target for the treatment of ...
Christopher D. McCune +9 more
semanticscholar +1 more source
Light-induced olefin metathesis
Beilstein Journal of Organic Chemistry, 2010 Light activation is a most desirable property for catalysis control. Among the many catalytic processes that may be activated by light, olefin metathesis stands out as both academically motivating and practically useful.
Yuval Vidavsky, N. Gabriel Lemcoff
doaj +1 more source
Synthetic Approaches to Diospongins: A Two Decade Journey
SynOpen, 2022 Tetrahydropyran units having multiple stereogenic centers serve as excellent building blocks for various active pharmaceutical ingredients (APIs). In particular, the presence of the unique molecular architecture of the trisubstituted tetrahydropyran (THP)
Krishnaji Tadiparthi, Sourav Chatterjee
doaj +1 more source
Substituted Pyrroles via Olefin Cross-Metathesis
Organic Letters, 2010 Olefin cross-metathesis (CM) provides a short and convenient entry to diverse trans-γ-aminoenones. When exposed to either acid or Heck arylation conditions, these intermediates are converted to mono-, di-, or trisubstituted pyrroles. The value of this chemistry is demonstrated by its application to the tetrasubstituted pyrrole subunit of Atorvastatin.
Donohoe, TJ +3 more
openaire +3 more sources
Beilstein Journal of Organic Chemistry, 2010 Seven novel Hoveyda–Grubbs precatalysts bearing an aminosulfonyl function are reported. Kinetic studies indicate an activity enhancement compared to Hoveyda’s precatalyst.
Etienne Borré +3 more
doaj +1 more source
A Short and Efficient Total Synthesis of Ficuseptamines A and B
Molecules, 2018 A rapid and efficient total synthesis of ficuseptamines A and B by a cross metathesis strategy is described.
Hani Mutlak A. Hassan
doaj +1 more source
Olefin metathesis transformations in thermomorphic multicomponent solvent systems [PDF]
, 2015 International ...
Bilel, Hallouma +5 more
core +3 more sources
Journal of the American Chemical Society, 2016 Molybdenum complexes with the general formula Mo(NR)(CHR')(OR″)(Cl)(MeCN) (R = t-Bu or 1-adamantyl; OR″ = a 2,6-terphenoxide) recently have been found to be highly active catalysts for cross-metathesis reactions between Z-internal olefins and Z-1,2 ...
J. K. Lam +5 more
semanticscholar +1 more source