Results 111 to 120 of about 15,429 (247)

Interpreting terminal selectivity in undirected C(sp³)-H functionalization: kinetic insights and mechanistic implications. [PDF]

Chem Sci
Tu JL, Guo L, Huang B, Xia W.
europepmc   +1 more source

Stereoselective Higher‐Order [10+4]‐ and [10+6] Cycloadditions Between Two Highly Unsaturated and Ambiphilic π‐Addends

Chemistry – A European Journal, EarlyView.
Aminocatalytically generated isobenzofulvenes and 3‐oxidopyridinium betaines act as ambiphilic reaction partners in orbital‐symmetry‐allowed [10+4] cycloadditions or formally symmetry‐forbidden concerted thermal [10+6] cycloadditions. The reaction furnishes three cycloadducts: one [10+4] cycloadduct and two regioisomeric [10+6] cycloadducts.
Jonas Faghtmann, Anne Kristensen, Fabien Fritz, Signe Sofie Pladsbjerg Andresen, Anne Rask Østergaard, Johannes Nygaard Lamhauge, K. N. Houk, Karl Anker Jørgensen   +7 more
wiley   +1 more source

Molecular Editing of Bilobalide: Regioselective C-Ring Lactam Formation. [PDF]

Org Lett
Wang W, Scheeff S, Hau SC, Qin Y, Sillapachaiyaporn C, Ng BW.   +5 more
europepmc   +1 more source

Breaking the Mold: Electrophilic Hydrophosphanation Emerges

Chemistry – A European Journal, EarlyView.
Electrophilic hydride attack on the olefin, instead of the classical nucleophilic addition by a phosphanido ligand, is unveiled in rhodium‐catalyzed olefin hydrophosphanation. This hydride‐driven pathway operates for both activated and inactivated olefins, with transition states characterized by elongated Rh─H bonds and nascent C─H bond formation ...
Víctor Varela‐Izquierdo, Janeth Navarro, Judit Cano‐Asensio, José A. López, Cristina Tejel   +4 more
wiley   +1 more source

Computational prediction of C-H hydricities and their use in predicting the regioselectivity of electron-rich C-H functionalisation reactions. [PDF]

Beilstein J Org Chem
Borup RM, Ree N, Jensen JH.
europepmc   +1 more source

Synthesis and Functional Properties of Fluorinated Phosphonate‐Substituted Porphyrins: Excellent Photosensitizers and Robust Precursors for Photoactive Langmuir–Schaefer Films

Chemistry – A European Journal, EarlyView.
This is a comprehensive study of new family of high functionalized meso‐tetraarylporphyrins. A synthetic approach to phosphonate‐substituted fluorinated porphyrins was developed. These compounds were investigated with respect to singlet oxygen generation and photostability.
Azhar Kechiche, Cyrille Monnereau, Chantal Andraud, Alla Bessmertnykh‐Lemeune, Yoann Rousselin, Andrey V. Cheprakov, Elizaveta V. Ermakova, Alexandra I. Zvyagina, Habib Nasri   +8 more
wiley   +1 more source

Precision Chemistry for Protein Lysine Modification

Chemistry – A European Journal, EarlyView.
Selective modification of lysine residues is challenging due to their similar intrinsic reactivity. Inspired by enzymatic recognition, ligand‐guided electrophiles enable site‐selective labeling and functionalization, while ligand‐guided catalyses achieve regioselective installation of bio‐relevant post‐translational modifications.
Mayu Onoda, Motomu Kanai
wiley   +1 more source

Cobalt-Catalyzed Syntheses of Acrylamides and Succindiamides from Alkynes and Amines Promoted by Light. [PDF]

J Am Chem Soc
Hemphill JT, Hsu DT, Handlin AD, Liu S, Alexanian EJ.   +4 more
europepmc   +1 more source

Synergistic Action of Ascorbic Acid and Readily Accessible NHC^N Ligands for the Oxidation of Gold(I) With Electron‐Rich Aryldiazonium Salts

Chemistry – A European Journal, EarlyView.
The synergic action of ascorbic acid and NHC^N ligands enables Au(I) oxidation with electron‐rich aryldiazonium salts. ABSTRACT The synergistic action of ascorbic acid and NHC^N ligands enables the challenging oxidation of Au(I) with electron‐rich aryldiazonium salts in the absence of a cocatalyst and/or irradiation. EPR, NMR, and x‐ray analyses reveal
Paula G. Cárdenas‐Cárdenas, Diego Dusso, Saúl Soto‐Zúñiga, Osvaldo F. López‐Saladino, Simón Hernández‐Ortega, Rubén A. Toscano, Virginia Gómez‐Vidales, Susana Porcel‐García   +7 more
wiley   +1 more source

A programmable bifunctional flavoenzyme for direct amine-to-ester conversion. [PDF]

Sci Adv
Wu Y, Song W, Wei W, Liu L, Wu J.
europepmc   +1 more source