FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2056836830> ?p ?o ?g. }

• W2056836830 endingPage "8761" @default.
• W2056836830 startingPage "8750" @default.
• W2056836830 abstract "Abstract The reactivity of palladium(0) complexes, [Pd 0 2 (dba‐ n , n′ ‐Z) 3 ] ( n , n′ ‐Z=4,4′‐F; 4,4′‐CF 3 ; 4,4′‐H; 4,4′‐MeO) and [Pd 0 (dba‐ n , n′ ‐Z) 2 ] ( n , n′ ‐Z=4,4′‐CF 3 ; 4,4′‐H; 3,3′,5,5′‐OMe), used as precursor catalysts with suitable donor ligands (e.g. phosphines, N‐heterocyclic carbenes), has been correlated in several palladium(0)‐mediated cross‐coupling processes. Increasing the electron density on the aryl moiety of the dba‐ n , n′ ‐Z ligand increases the overall catalytic activity in the majority of these processes. This effect primarily derives from destabilization of the L n Pd 0 –η 2 ‐dba interaction (in dπ–π* synergic bonding, n =1 or 2), which ultimately increases the global concentration of catalytically active L n Pd 0 available for reaction with aryl halide in the first committed step in the general catalytic cycle(s) (oxidative addition). Decreasing electron density on the aryl moiety of the dba‐ n , n′ ‐Z ligand stabilizes the Pd 0 –η 2 ‐dba interaction, reducing catalytic activity. The specific type of dba‐ n , n′ ‐Z ligand appears to also play a stabilizing role in the catalytic cycle, preventing Pd agglomeration, and increasing catalyst longevity. A subtle balance therefore exists between the L n Pd 0 concentration (and the associated catalytic activity) and catalyst longevity. Changing the type of dba‐ n , n′ ‐Z ligand controls the concentration of L n Pd 0 and the rate of the oxidative addition step, and not other intimate steps within the catalytic cycle(s), for example, transmetallation (or carbopalladation) and reductive elimination. The role of dba‐ n , n′ ‐Z ligands in Heck arylation is more convoluted and dependant on the alkene substrate employed, although trends have emerged. Changes in the structure of dba‐ n , n′ ‐Z had a minimal affect on Buchwald–Hartwig aryl amination processes. A secondary Michael reaction of dba‐ n , n′ ‐Z with amine and/or base effectively lessens its interference in the catalytic cycle." @default.
• W2056836830 created "2016-06-24" @default.
• W2056836830 creator A5017527050 @default.
• W2056836830 creator A5033210592 @default.
• W2056836830 creator A5053873348 @default.
• W2056836830 creator A5054674963 @default.
• W2056836830 creator A5060198588 @default.
• W2056836830 creator A5063722779 @default.
• W2056836830 creator A5080429069 @default.
• W2056836830 date "2006-11-16" @default.
• W2056836830 modified "2023-10-17" @default.
• W2056836830 title "Exploiting Noninnocent (E,E)-Dibenzylideneacetone (dba) Effects in Palladium(0)-Mediated Cross-Coupling Reactions: Modulation of the Electronic Properties of dba Affects Catalyst Activity and Stability in Ligand and Ligand-Free Reaction Systems" @default.
• W2056836830 cites W1534102405 @default.
• W2056836830 cites W1570208454 @default.
• W2056836830 cites W1964318484 @default.
• W2056836830 cites W1966002538 @default.
• W2056836830 cites W1972661867 @default.
• W2056836830 cites W1973051136 @default.
• W2056836830 cites W1975775855 @default.
• W2056836830 cites W1978890358 @default.
• W2056836830 cites W1980382994 @default.
• W2056836830 cites W1981323076 @default.
• W2056836830 cites W1981754097 @default.
• W2056836830 cites W1984554723 @default.
• W2056836830 cites W1997320516 @default.
• W2056836830 cites W2006147901 @default.
• W2056836830 cites W2008656557 @default.
• W2056836830 cites W2010978436 @default.
• W2056836830 cites W2016041703 @default.
• W2056836830 cites W2016757577 @default.
• W2056836830 cites W2018960057 @default.
• W2056836830 cites W2020931127 @default.
• W2056836830 cites W2024122111 @default.
• W2056836830 cites W2024536147 @default.
• W2056836830 cites W2029259136 @default.
• W2056836830 cites W2031966729 @default.
• W2056836830 cites W2032072829 @default.
• W2056836830 cites W2032719558 @default.
• W2056836830 cites W2038937065 @default.
• W2056836830 cites W2042609757 @default.
• W2056836830 cites W2043802979 @default.
• W2056836830 cites W2048085660 @default.
• W2056836830 cites W2051231799 @default.
• W2056836830 cites W2056842584 @default.
• W2056836830 cites W2056859548 @default.
• W2056836830 cites W2057130990 @default.
• W2056836830 cites W2057336853 @default.
• W2056836830 cites W2057902666 @default.
• W2056836830 cites W2058138810 @default.
• W2056836830 cites W2058479841 @default.
• W2056836830 cites W2060469597 @default.
• W2056836830 cites W2070096349 @default.
• W2056836830 cites W2072117080 @default.
• W2056836830 cites W2078177715 @default.
• W2056836830 cites W2083394233 @default.
• W2056836830 cites W2085172649 @default.
• W2056836830 cites W2086008229 @default.
• W2056836830 cites W2091052476 @default.
• W2056836830 cites W2098941592 @default.
• W2056836830 cites W2099742764 @default.
• W2056836830 cites W2100934912 @default.
• W2056836830 cites W2104500118 @default.
• W2056836830 cites W2109855412 @default.
• W2056836830 cites W2110496741 @default.
• W2056836830 cites W2113178062 @default.
• W2056836830 cites W2116350131 @default.
• W2056836830 cites W2121728403 @default.
• W2056836830 cites W2129675641 @default.
• W2056836830 cites W2129817506 @default.
• W2056836830 cites W2131914170 @default.
• W2056836830 cites W2142825955 @default.
• W2056836830 cites W2143856302 @default.
• W2056836830 cites W2146862414 @default.
• W2056836830 cites W2150805674 @default.
• W2056836830 cites W2154869587 @default.
• W2056836830 cites W2161040441 @default.
• W2056836830 cites W2165412289 @default.
• W2056836830 cites W2168164687 @default.
• W2056836830 cites W2173975460 @default.
• W2056836830 cites W2176312596 @default.
• W2056836830 cites W2179842699 @default.
• W2056836830 cites W2497333558 @default.
• W2056836830 cites W2950042323 @default.
• W2056836830 cites W2951584159 @default.
• W2056836830 cites W2952094225 @default.
• W2056836830 cites W2952388617 @default.
• W2056836830 cites W2952798639 @default.
• W2056836830 cites W2952823014 @default.
• W2056836830 cites W4236853872 @default.
• W2056836830 cites W4244610106 @default.
• W2056836830 doi "https://doi.org/10.1002/chem.200600473" @default.
• W2056836830 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16952128" @default.
• W2056836830 hasPublicationYear "2006" @default.
• W2056836830 type Work @default.
• W2056836830 sameAs 2056836830 @default.
• W2056836830 citedByCount "86" @default.
• W2056836830 countsByYear W20568368302012 @default.
• W2056836830 countsByYear W20568368302013 @default.

• next