Results 101 to 110 of about 8,250 (257)
Abnormal Hyperchromism of the n→π* Absorption Band of Acetone in Protic Solvents [PDF]
, 1978 Masako Yudasaka, Haruo Hosoya
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Dinuclear Rhodium(I)–N‐Heterocyclic Carbene Complexes as Alkyne Hydropyridonation Catalysts
European Journal of Inorganic Chemistry, EarlyView.Catalyst Improvement by NHC tuning: A series of new RhI–NHC dinuclear complexes has been revealed as efficient alkyne hydropyridonation catalysts. 333053IMes complex displays the highest reactivity of the series, suggesting that a moderate steric demand combined with balanced σ‐donation facilitates precatalyst activation and substrate exchange.
Belinda Español‐Sánchez +7 more
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Cooperative effect of dπ-electron delocalization in, and H...π type interaction of transition metal complexes with protic solvents [PDF]
, 1981 Włodzimierz Libuś
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European Journal of Organic Chemistry, EarlyView.A method for synthesizing sulfur‐substituted cyclohexenes is reportedthat leverages the η2‐coordination of a phenyl sulfone to [WTp(NO)(PMe3)] (Tp = trispyrazolylborate). Three sequential protonation and nucleophilic additions to the bound arene, followed by oxidative decomplexation, affords functionalized cyclohexenes bearing sp3‐ and sulfur‐enriched ...
Daniel J. Siela +3 more
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Chlorinated Paracyclophanes: Composition Analysis and Direct Metal‐Free Alkylation with n‐BuLi
European Journal of Organic Chemistry, EarlyView.A transition‐metal‐free alkylation of pseudo‐para dichloro[2.2]paracyclophane (Cl2‐PCP) is reported, utilizing the purified pseudo‐para isomer and n‐butyllithium (BuLi). Optimization with the chelating agent TMEDA and refluxing n‐heptane significantly boosted selectivity and reaction rate, providing the dialkylated product in 22% isolated yield.
Davide Frigatti +3 more
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Acta Chimica Slovenica, 2014 The compound 3,3’-[(4-Hydroxyphenyl)methyl]bis-(4-hydroxy-2H-chromen-2-one) was synthesized by the Knoevenagel reaction. Crystals, suitable for X-ray data collection were grown by slow evaporation from an ethanol solution.
Denitsa Elenkova +3 more
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Sulfur Ylides in Skeletal‐Editing—Ring Expansion Reactions
Helvetica Chimica Acta, EarlyView.Sulfur ylides (S‐ylides) are emergent diazo surrogates that enable skeletal editing and ring expansion with safer handling and broad functional group tolerance. This perspective covers pioneer works and highlights recent advances in the field, while outlining key challenges and future directions that may redefine the role of S‐ylides in modern ...
Arsala Kamal +3 more
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Reactions of Lucigenin in protic solvents in the presence of amines
, 1994 Kyriakos Papadopoulos +2 more
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