Results 151 to 160 of about 11,071 (289)

Ein Ruthenium‐(Ph‐BPE) Katalysator für die asymmetrische Alkinylierung von Fluoral: Enantioselektion aus einem von 12 fluxionalen Komplexen mit rutheniumzentrierter Stereogenität

Angewandte Chemie, EarlyView.
Dies beschreibt die ersten enantioselektiven Alkinylierungen wässrigen Fluorals. Diese Prozesse werden durch einen Iodid‐gebundenen Ruthenium‐(Ph‐BPE)‐Komplex katalysiert, welcher als oktaedrischer Metallkomplex in 12 verschiedenen stereoisomeren Formen vorliegen kann.
Weijia Shen, Sebastian Höthker, Colin E. Hayter, Nicholas K. Bowers, Andrea Pellegrini, Stefan Grimme, Michael J. Krische   +6 more
wiley   +1 more source

Stable Vicinal Bisketene Equivalents for Aryne Diels-Alder Reactions. [PDF]

Synlett
Budwitz JE, Newton CG.
europepmc   +1 more source

Thiophene Derivatives as Versatile Precursors for (Hetero)Arene and Natural Product Synthesis. [PDF]

Angew Chem Int Ed Engl
Keimer A, Haut FL.
europepmc   +1 more source

Thiophenes as Indicators of Aqueous Alteration in Carbonaceous Meteorites

, 2006
A common class of organic compound in low petrographic type meteorites is the sulfur-containing thiophenes. The presence of this compound class in organic-rich meteorites which have experienced substantial levels of aqueous alteration is relatively ...
Perry, Randall S., Hoover, Richard B., Sephton, Mark A.   +2 more
core  

Smartphone light-driven electrocatalytic polymerization of thiophenes

International audienceHerein we take advantage of the photoelectric effect produced on light-emitting diodes to induce a kinetically controlled electrocatalytic polymerization of 3,4-alkoxythiophenes.
Raoux, Matthieu, Thuau, Damien, Cloutet, Eric, Kuhn, Alexander, Kassahun, Getnet, Abbas, Mamatimin, Nakar, Rana, Lang, Jochen, Salinas, Gerardo   +8 more
core   +1 more source

Regioselective C-Arylation of Functionalized Nitroalkanes with Furan, Thiophene, and Substituted Thiophenes. [PDF]

J Org Chem
Detková KR, Jakubcová K, Malatinský T, Filo J, Cigáň M, Budzák Š, Medved' M, Jakubec P.   +7 more
europepmc   +1 more source

Cyclopenta-thiophenes. VIII. Thiophene Analogues of Isoindenes. [PDF]

Acta Chemica Scandinavica, 1978
Jan Skramstad, Turid Midthaug, Didier Mathieu, Florentin S. Ahouande, André Babadjamian, Jacques Metzger   +5 more
openaire   +1 more source

Unlocking Catalyst Activation as a Critical Bottleneck in Cross‐Coupling Reactions: Room‐Temperature Couplings of Weak Nucleophiles Enabled by [Pd(1‐MeNAP)TFA]2 Precatalysts

Angewandte Chemie International Edition, EarlyView.
In many Pd‐catalyzed cross‐couplings, catalyst performance has been found to be limited by catalyst activation. Methylnaphthyl (MeNAP) palladium trifluoroacetate dimers are presented as easy‐to‐store and easy‐to‐handle precursors, which rapidly activate under reaction conditions, even when only weakly coordinating, non‐reducing nucleophiles are present.
Sourav Manna, Henric F. Janning, Nikolaos V. Tzouras, Jane Anto Simplica Sagayaraj, Fadil Faizal Mannighayil, Angelino Doppiu, Lukas J. Gooßen   +6 more
wiley   +1 more source

Enabling Base-Free Direct C-H Arylation of Thiophene Derivatives: Glycerol-Derived Solvents as Active Reaction Media. [PDF]

ChemSusChem
Gracia-Barberán S, Nejrotti S, Leal-Duaso A, Centrella B, Sanson A, Mayoral JA, Barolo C, Pires E, Bonomo M.   +8 more
europepmc   +1 more source

Singlet machine learning photodynamics reveal competing inversion paths of methylated cyclooctatetrathiophene. [PDF]

Chem Sci
Salguero C, Lopez SA.
europepmc   +1 more source