Results 151 to 160 of about 938,190 (242)

Orchestrating Anion–π+ Interactions to Accelerate Metal‐Free Room‐Temperature Phosphorescence

Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.
Tuning anion–π+ interactions in pyridinium iodide contact ion pairs enables ultrafast metal‐free room‐temperature phosphorescence (540–605 nm) with radiative rates up to 5.2×105 s−1. Strong iodide→π+ charge‐transfer coupling, enhanced spin–orbit interactions, and dynamic ion‐pair organization accelerate intersystem crossing and emission, establishing ...
Eetu Hakkarainen, Corentin Montagne, Hao‐Cheng Lin, Chen‐Yu Lin, Khai‐Nghi Truong, Po‐Yu Chen, Anton Nechaev, Fabien B. L. Cougnon, Igor O. Koshevoy, Toni Eskelinen, Hao‐Wu Lin, Pi‐Tai Chou, Andrey Belyaev   +12 more
wiley   +2 more sources

Ring-closing metathesis of prochiral oxaenediynes to racemic 4-alkenyl-2-alkynyl-3,6-dihydro-2H-pyrans. [PDF]

Beilstein J Org Chem, 2020
Kolaříková V, Rybáčková M, Svoboda M, Kvíčala J.   +3 more
europepmc   +1 more source

Novel tandem ring-opening/ring-closing metathesis reactions of functionalized cyclohexenoids derived from (−)-alpha-pinene

, 2002
The cyclohexenone (+)-2, readily obtained from (−)-alpha-pinene 1 was elaborated to (+)-3 in an attempt to construct the AB rings of taxoids employing the ring-closure metathesis (RCM) reaction as the key step.
Nandakumar, Jayakrishnan, Mehta, Goverdhan   +1 more
core  

Intramolecular Nickel‐Catalyzed Reductive Coupling: Enantioselective Synthesis of Tetrahydroisoquinolines and Related Heterocycles

Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.
The successful extension of the nickel‐catalyzed asymmetric coupling of polarized 1,3‐dienes with aldehydes to an intramolecular setting opens an efficient new entry into hydroxylated N‐heterocyclic compounds, most notably valuable tetrahydroisoquinolines.
Thilo Bender, Markus Leutzsch, Yannik Sell, Alois Fürstner   +3 more
wiley   +2 more sources

Homogeneous and Functional Group Tolerant Ring-Closing Metathesis for DNA-Encoded Chemical Libraries. [PDF]

ACS Comb Sci, 2020
Monty OBC, Nyshadham P, Bohren KM, Palaniappan M, Matzuk MM, Young DW, Simmons N.   +6 more
europepmc   +1 more source

Bidirectional Synthesis of the IJK Fragment of Ciguatoxin CTX3C by Sequential Double Ring-Closing Metathesis and Tsuji-Trost Allylation. [PDF]

Org Lett, 2020
Popadynec M, Gibbard H, Clark JS.
europepmc   +1 more source

Chelation‐Assisted Metal‐Catalyzed Ligation and Cleavage Reactions for Chemical Biology

European Journal of Organic Chemistry, Volume 29, Issue 39, 22 October 2026.
Chelation‐assisted transition metal catalysis has emerged as a promising complement to bioorthogonal click chemistry for studying biological processes. By pre‐organizing catalytic metal centers, designed coordinating substrates enhance reactivity and biocompatibility, enabling site‐selective ligation and decaging reactions in complex biological media ...
Emilie Plantiveau, Maxime Riberaud, Frédéric Taran, Antoine Sallustrau   +3 more
wiley   +1 more source

Construction of quaternary stereocenters via Ru-catalyzed asymmetric ring-closing metathesis. [PDF]

Nat Commun
Li S, Yang Q, Hu R, Zheng Y, Gao X, Cao J, Wang J, Chen B, Xu C, Xing X.   +9 more
europepmc   +1 more source

"Close-to-Release": Spontaneous Bioorthogonal Uncaging Resulting from Ring-Closing Metathesis. [PDF]

J Am Chem Soc, 2019
Sabatino V, Rebelein JG, Ward TR.
europepmc   +1 more source

Synthesis of Substituted Tetrafluorocyclobutenes and Their Ring-Opening Metathesis/Ring-Closing Metathesis to Dihydrofurans Bearing a Tetrafluoroethylene Unit. [PDF]

ACS Omega
Kučnirová K, Kvíčala J, Cvačka J, Rybáčková M.   +3 more
europepmc   +1 more source