Results 151 to 160 of about 3,296 (240)

Unexpected catalytic reactions of silyl-protected enol diazoacetates with nitrile oxides that form 5-arylaminofuran-2(3H)-one-4-carboxylates. [PDF]

Org Lett, 2012
Xu X, Shabashov D, Zavalij PY, Doyle MP.
europepmc   +1 more source

Nickel‐Catalyzed Reductive Cross‐Coupling of Xanthate Esters With Aryl and Alkenyl Iodides

Chemistry – A European Journal, EarlyView.
A nickel‐catalyzed reductive cross‐coupling of xanthate esters and aryl/alkenyl iodides is reported without the need for separate activators for the xanthate esters. The reaction utilizes a relatively low catalyst loading. Diarylmethanes with a good functional group variety can thus be synthesized indirectly from the corresponding benzylic alcohols ...
Felix Vöhringer, Kathrin Zwettler, Dmitry I. Sharapa, Felix Studt, Ivana Fleischer   +4 more
wiley   +1 more source

Germylium Catalyzed Dehydrofluorination Reactions of Fluorinated Alkanes

Chemistry – A European Journal, EarlyView.
Dehydrofluorination reactions of fluorinated alkanes catalyzed by germylium ions are reported. Computational studies of the mechanism revealed an E2 type mechanism involving a germane as a base to facilitate olefin formation in competition with an SN2 mechanism for hydrodefluorination.
Julie Borel, Morten Lehmann, Martin Kaupp, Thomas Braun   +3 more
wiley   +1 more source

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

Chemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

Expanding Cyanide‐Bridged Weakly Coordinating Anions Through the Brominated Silver Salt Ag[BCNBBr]

Chemistry – A European Journal, EarlyView.
The brominated weakly coordinating anion [μ‐(CN)(B(C6F4Br)3)2] ([BCNBBr]−), based on two B(C6F4Br)3 units bridged by cyanide, is obtained as its silver salt Ag[BCNBBr] from CH2Cl2. Ag[BCNBBr] enables oxidation and halide abstraction reactions, affording diverse [BCNBBr]− salts with oxidizing and electrophilic cations.
Amina L. Moshtaha, Tim‐Niclas Streit, Joshua Parche, Robin Sievers, Moritz Malischewski   +4 more
wiley   +1 more source

Synthesis and <i>in silico</i> insights of some tetrahydrobenzothienopyrimidine candidates as multi-target antimicrobial, antiproliferative, and antiviral agents. [PDF]

RSC Adv
Elgubbi AS, Hamed S, Alanazi BN, Ahmed HA, Ramadan SK.   +4 more
europepmc   +1 more source

Controlled Formation and Unusual Reactivity of Cyanohexatriyne (HC7N), a Synthetically Challenging Interstellar Cyanopolyyne

Chemistry – A European Journal, EarlyView.
First controlled formation of cyanohexatriyne (HC7N) is achieved using a cobalt–alkyne masking strategy that overcomes the intrinsic instability of nitrile‐substituted polyynes. The approach enables spectroscopic validation of HC7N and reveals its pronounced electrophilicity through a selective conjugate addition with diethylamine.
Léa Lefrançois, Mano Cremer, Thierry Roisnel, Jean‐Claude Guillemin, Yann Trolez   +4 more
wiley   +1 more source

Physicomechanical Performance and Aging Behavior of Polycarbodiimide-Cross-Linked Accelerator-Free Carboxylated Nitrile Butadiene Rubber Latex Gloves. [PDF]

ACS Omega
Wan Azman N, Kamei R, Matsuoka T, Ikeda K, Kubono Y, A Rashid A.   +5 more
europepmc   +1 more source

Relay Approach: A Convergent Synthesis of Key Fragments en route to (+)‐Neosorangicin A

Chemistry – A European Journal, EarlyView.
A selective synthesis of three key fragments of the antibiotically active (+)‐neosorangicin A is reported, providing a foundation for its convergent total synthesis and proof of strategy via a relay approach. ABSTRACT Herein, we report the synthesis of the three key fragments of the macrolide antibiotic (+)‐neosorangicin A, a compound exhibiting potent
Marvin Wenninger, Maxim Munt, Le Chang, Rositsa Stoykova, Roberto Ojcius, Oliver Spieß, Dieter Schinzer   +6 more
wiley   +1 more source

Synthesis and characterization of Ni-MOF and CoFe₂O₄/Ni-MOF as reusable heterogeneous catalysts for the synthesis of 5-substituted 1H-tetrazole. [PDF]

Sci Rep
Faizy M, Molaei S, Ghadermazi M.
europepmc   +1 more source