Results 131 to 140 of about 30,672 (247)

Light‐Gated Control of Brownian Rotation by a Molecular Motor

Angewandte Chemie, EarlyView.
A light‐driven molecular motor acts as a reversible steric gate for a nearby Brownian rotor. Photoisomerization switches the rotor between fast and hindered rotational regimes by modulating steric congestion around the rotational axis. The motor–rotor architecture enables a five‐order‐of‐magnitude difference in the rotational barrier, demonstrating ...
Lukáš Severa, Kateřina Bezděková, Katarina Majerová Varga, Guillaume Bastien, Miroslav Stroka, Ivana Císařová, Martin Dračínský, Jiří Kaleta   +7 more
wiley   +1 more source

Pushing the boundaries of Pt(0)-catalysed hydrophosphination to the synthesis of multidentate tertiary phosphines. [PDF]

Chem Sci
Clarke JM, Nuttall RE, Williams SJ, Hughes NJ, Mahay-Goodrich LH, Fey N, Pringle PG.   +6 more
europepmc   +1 more source

S = 3/2 Iron(I)‐Bisphosphine‐Ate Complexes: Synthesis, Characterization, and Reactivity for Electrophile Activation

Angewandte Chemie, EarlyView.
In this work, we present a new class of unusual charged Fe(I)‐bisphosphine‐ates, along with full characterization of their structure and bonding, utilizing low‐temperature synthetic and spectroscopic and techniques. These complexes are highly reactive toward catalytically relevant electrophiles, and can serve as valuable synthons providing access to ...
Egor Kokin, Shih‐Chieh Kao, Matthew J. Kania, Michael L. Neidig   +3 more
wiley   +1 more source

Well-defined alkali metal catalysts for selective reduction of functionalized esters and carbonyl compounds <i>via</i> hydrosilylation. [PDF]

RSC Adv
Zhang G, Hiyaev P, Mei H, Chocho M.
europepmc   +1 more source

Germa‐Michael Addition: Substratbreite, Mechanismus und Zugang zu Biokompatiblen Wasserlöslichen Typ‐I‐Photoinitiatoren

Angewandte Chemie, EarlyView.
Wir beschreiben die erste Germa‐Michael‐Addition zur Synthese eines wasserlöslichen Germanium‐Photoinitiators mit hoher Initiierungseffizienz, Stabilität und geringer Zytotoxizität. Ein NHS‐Ester eröffnet Möglichkeiten zur Biokonjugation, während doppelte Additionen das Funktionalisierungsspektrum erweitern.
Matthias Paris, David Vorcnik, Renata Raptova, Mathias Wiech, Nils Ansmann, Zizheng Zhang, Ana Torvisco, Roland C. Fischer, Christine Bandl, Julia Fuchs, Dagmar Brislinger, Lutz Greb, Georg Gescheidt, Michael Haas   +13 more
wiley   +1 more source

Difluoromethylenation of Alkynes: Streamlined Access to Allyl Difluorides

Angewandte Chemie, EarlyView.
Stabilizing primary oxocarbenium in HF/pyridine unlocks a direct alkyne difluoromethylenation – an efficient route to synthetically‐relevant allyl difluorides in a single step. ABSTRACT A direct difluoromethylenation of alkynes has been developed using HF/pyridine as a dual acidic and fluorinating medium. The reaction proceeds via in situ generation of
Fabien Naullet, Sourav Mondal, Frédéric Guégan, Bastien Michelet, Sébastien Thibaudeau   +4 more
wiley   +1 more source

The Convergent Synthetic Efforts toward Knightol and a Simplified Analog. [PDF]

J Org Chem
Jeremia L, Bezold EL, Bright K, Wuest WM.   +3 more
europepmc   +1 more source

Synthese von Aminocyclopropanen durch redoxneutrale Aminoalkylierung

Angewandte Chemie, EarlyView.
Wir berichten über eine Synthese von Aminocyclopropanen durch Hydroaminoalkylierung unter Einsatz kostengünstiger, leicht zugänglicher Ausgangsmaterialien. Der Ansatz bietet Orthogonalität zu gängigen Methoden und ermöglicht eine breite Toleranz gegenüber funktionellen Gruppen.
Gwyndaf A. Oliver, Konstantin Günther, Chiara Sebastianelli‐Schoditsch, Sophie Woolford, Iina Ludwig, Harald H. Sitte, Nuno Maulide   +6 more
wiley   +1 more source

Enhanced alkene productivity in methanol-to-hydrocarbons conversion using a secondary catalyst component and hydrogen co-feeds. [PDF]

Nat Commun
Vanni M, Brenig A, Clark AH, van Bokhoven JA, Paunović V.   +4 more
europepmc   +1 more source

Efficient Green Light‐Induced Photoclick Reactions Enabled by Triplet–Triplet Annihilation Photon Upconversion

Angewandte Chemie, EarlyView.
A general strategy for 9,10‐phenanthrenequinone‐electron‐rich alkene (PQ‐ERA) photoclick reactions via triplet–triplet annihilation upconversion (TTA‐UC) under low‐intensity green light is reported. A TTA‐UC system of PdOEP (sensitizer) and DPA (annihilator) mixed with reactants generates UV/blue photons overlapping the absorption of PQ derivatives ...
Qingxin Luan, Mei Sang, Yuxin He, Hao Yang, Anna M. Doze, Lili Hou, Youxin Fu, Ben L. Feringa   +7 more
wiley   +1 more source