Rapid synthesis of 4-alkynyl coumarins and tunable electronic properties of emission solvatochromic fluorophores
Sign Up to like & getrecommendations! Published in 2019 at "Dyes and Pigments"
DOI: 10.1016/j.dyepig.2019.03.038
Abstract: Abstract Novel fluorescent 4-alkynyl coumarins were rapidly and efficiently synthesized by Sonogashira coupling of readily accessible coumaryl triflates. The photophysical properties of the predominantly highly fluorescent compounds were experimentally studied by absorption and fluorescence spectroscopy… read more here.
Keywords: synthesis alkynyl; alkynyl coumarins; coumarins tunable; rapid synthesis ... See more keywords
Mechanistic Insights into Multisilver-Mediated Synergistic Activation of Terminal Alkynes.
Sign Up to like & getrecommendations! Published in 2023 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.2c03464
Abstract: Synergistic effect extensively exists in multimetal-involved catalytic or mediated processes of group 11 metals due to their remarkable metallophilic interactions. Herein, we present a multiple synergism model for alkynyl substrates and conduct theoretical investigations on… read more here.
Keywords: multisilver mediated; mediated synergistic; alkynyl; insights multisilver ... See more keywords
Structure-Based Design of Novel Alkynyl Thio-Benzoxazepinone Receptor-Interacting Protein Kinase-1 Inhibitors: Extending the Chemical Space from the Allosteric to ATP Binding Pockets.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of medicinal chemistry"
DOI: 10.1021/acs.jmedchem.2c02067
Abstract: Systemic inflammatory response syndrome (SIRS), characterized by severe systemic inflammation, represents a major cause of health loss, potentially leading to multiple organ failure, shock, and death. Exploring potent RIPK1 inhibitors is an effective therapeutic strategy… read more here.
Keywords: binding pockets; allosteric atp; atp binding; alkynyl ... See more keywords
Synthetic Strategy for Aryl(alkynyl)phosphinates by a Three-Component Coupling Reaction Involving Arynes, Phosphites, and Alkynes.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c03231
Abstract: An efficient and straightforward method for the synthesis of aryl(alkynyl)phosphinates was developed via a three-component coupling reaction involving arynes, phosphites, and alkynes. An array of aryl(alkynyl)phosphinates were produced from both aryl and aliphatic group-substituted acetylenes.… read more here.
Keywords: reaction; alkynyl phosphinates; aryl alkynyl; alkynyl ... See more keywords
Photocatalytic Alkyl Addition to Access Quaternary Alkynyl α-Amino Esters.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c03669
Abstract: A regioselective alkylation of β,γ-alkynyl-α-imino esters by visible-light photocatalysis has been developed. This method enables 1,2-addition of methyl, primary, secondary, and tertiary alkyl radicals to the conjugated imines under mild conditions to produce a variety… read more here.
Keywords: quaternary alkynyl; addition; alkynyl; alkynyl amino ... See more keywords
Alkynyl-Stabilized Superatomic Silver Clusters Showing Circularly Polarized Luminescence.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c02098
Abstract: We report a new enantiomeric pair of superatomic silver clusters, R/S-Ag17, prepared from chiral alkynyl ligands. R-Ag17 and S-Ag17 possess C3 symmetry and emit near-infrared (NIR) light with a quantum yield (QY) of 8.0% under… read more here.
Keywords: silver clusters; circularly polarized; superatomic silver; polarized luminescence ... See more keywords
Problematic ArF–Alkynyl Coupling with Fluorinated Aryls. From Partial Success with Alkynyl Stannanes to Efficient Solutions via Mechanistic Understanding of the Hidden Complexity
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c10842
Abstract: The synthesis of aryl–alkynyl compounds is usually achieved via Sonogashira catalysis, but this is inefficient for fluorinated aryls. An alternative method reported by Shirakawa and Hiyama, using alkynylstannanes and hemilabile PN ligands, works apparently fine… read more here.
Keywords: fluorinated aryls; alkynyl; problematic arf; arf alkynyl ... See more keywords
Quadratic and cubic hyperpolarizabilities of nitro-phenyl/-naphthalenyl/-anthracenyl alkynyl complexes.
Sign Up to like & getrecommendations! Published in 2018 at "Dalton transactions"
DOI: 10.1039/c8dt00155c
Abstract: 1-Nitronaphthalenyl-4-alkynyl and 9-nitroanthracenyl-10-alkynyl complexes [M](C[triple bond, length as m-dash]C-4-C10H6-1-NO2) ([M] = trans-[RuCl(dppe)2] (6b), trans-[RuCl(dppm)2] (7b), Ru(PPh3)2(η5-C5H5) (8b), Ni(PPh3)(η5-C5H5) (9b), Au(PPh3) (10b)) and [M](C[triple bond, length as m-dash]C-10-C14H8-9-NO2) ([M] = trans-[RuCl(dppe)2] (6c), trans-[RuCl(dppm)2] (7c), Ru(PPh3)2(η5-C5H5) (8c),… read more here.
Keywords: c5h5 pph3; phenyl naphthalenyl; pph3 c5h5; alkynyl ... See more keywords
A metal-free route to alkynyl sulfones under photoinduced conditions with the insertion of sulfur dioxide
Sign Up to like & getrecommendations! Published in 2020 at "Green Chemistry"
DOI: 10.1039/d0gc00332h
Abstract: A metal-free route to alkynyl sulfones under photoinduced conditions is accomplished, starting from 4-alkyl Hantzsch esters, sulfur dioxide, and alkynyl bromides under visible light irradiation at room temperature. This transformation proceeds smoothly, affording the corresponding… read more here.
Keywords: sulfur dioxide; free route; alkynyl sulfones; alkynyl ... See more keywords
A unique series of chromium(iii) mono-alkynyl complexes supported by tetraazamacrocycles.
Sign Up to like & getrecommendations! Published in 2021 at "Dalton transactions"
DOI: 10.1039/d1dt00707f
Abstract: Described herein is the synthesis and characterization of macrocyclic CrIII mono-alkynyl complexes. By using the meso-form of the tetraazamacrocycle HMC (HMC = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane), trans-[Cr(HMC)(C2Ph)Cl]OTf (1a), trans-[Cr(HMC)(C2Np)Cl]OTf (2a), trans-[Cr(HMC)(C2C6H4tBu)Cl]OTf (3a), and trans-[Cr(HMC)(C2(3,5-Cl2C6H3))Cl]OTf (4a) complexes have been… read more here.
Keywords: mono alkynyl; alkynyl; otf trans; alkynyl complexes ... See more keywords
Nickel-Catalyzed Difunctionalization of Alkynyl Bromides with Thiosulfonates and N-Arylthio Succinimides: A Convenient Synthesis of 1,2-Thiosulfonylethenes and 1,1-Dithioethenes
Sign Up to like & getrecommendations! Published in 2021 at "Synthesis"
DOI: 10.1055/a-1482-2486
Abstract: An efficient Ni-catalyzed vicinal thiosulfonylation of 1-bromoalkynes with thiosulfonates in the presence of cesium carbonate has been described. An operationally simple and highly regioselective atom transfer radical addition (ATRA) of alkynyl bromides provided a wide… read more here.
Keywords: thiosulfonylation; synthesis; bromides thiosulfonates; alkynyl ... See more keywords