Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/ja01197a526 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reversible Binding of Hydrogen and Styrene Coordination on a Manganese Phosphenium Complex.
Chemistry
November 2023
Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany.
The reactions of two complexes [( NHP)Mn(CO) ] ( NHP=N-arylated N-heterocyclic phosphenium) with H at elevated pressure (≈4 bar) were studied by NMR spectroscopy. Irradiation with UV light initialized in one case (5 a, R=Dipp) the unselective formation of ( NHP-H)MnH(CO) ] (6 a) via cooperative addition of H across the Mn=P double bond. In the other case (5 b, R=Mes), addition of H was unobservable and the reaction proceeded via decarbonylation to a dimeric species [( NHP) Mn (CO) ] (7 b) that was isolated and identified spectroscopically.
View Article and Find Full Text PDFNickel(0)-Catalyzed Decarbonylative Cross-Coupling of Aromatic Esters with Arylboronic Acids via Chelation Assistance.
ACS Omega
June 2022
Department of Chemistry, College of Science, Tianjin University, Tianjin 300350, P. R. China.
10-Arylbenzo[]quinolines were synthesized by cross-coupling of ethyl benzo[]quinoline-10-carboxylate with arylboronic acids group-directed Ni(0) catalyzation. The catalytic system combining Ni(COD) (10 mol %) with PCy (20 mol %) and -BuOK (3 equiv) was optimal for the above transformations. A series of arylboronic acids reacted with ethyl benzo[]quinoline-10-carboxylates for the production of various substituted 10-phenyl[]quinolines in moderate and good yields under optimized reaction conditions.
View Article and Find Full Text PDFStructural, spectroscopic, and photochemical study of ethyl propiolate isolated in cryogenic argon and nitrogen matrices.
Spectrochim Acta A Mol Biomol Spectrosc
November 2020
University of Coimbra, CQC, Department of Chemistry, 3004-535 Coimbra, Portugal. Electronic address:
Ethyl propiolate (HC ≡ CCOOCHCH, EP) was studied experimentally by infrared spectroscopy in argon and nitrogen cryomatrices (15 K) and by quantum chemical calculations (at the DFT(B3LYP) and MP2 levels of theory). Calculations predict the existence of four conformers: two low-energy conformers (I and II) possessing the carboxylic moiety in the cis configuration (O=C-O-C dihedral equal to ~0°) and two higher-energy trans forms (O=C-O-C dihedral equal to ~180°; III and IV). The conformation of the ethyl ester group within each pair of conformers is either anti (C-O-C-C equal to 180°; in conformers I and III) or gauche (C-O-C-C equal to ±86.
View Article and Find Full Text PDFIntroducing an α-Keto Ester Functional Group through Pt-Catalyzed Direct C-H Acylation with Ethyl Chlorooxoacetate.
ACS Omega
April 2020
Department of Chemistry, East Carolina University, Greenville, North Carolina 27858, United States.
Platinum-catalyzed selective C-H acylation of 2-aryloxypyridines with ethyl chlorooxoacetate provides an efficient way of introducing an α-keto ester functional group. The reaction is oxidant-free, additive-free, and, more significantly, free of any decarbonylative side reactions. The reaction tolerates a variety of substituents from strongly electron-donating to strongly electron-withdrawing groups.
View Article and Find Full Text PDFIdentification of ()-8-Heptadecene and -Pentadecane as Electrophysiologically Active Compounds in and Its Pollinator.
Int J Mol Sci
January 2020
Department of Chemical Engineering, Mid Sweden University, 85170 Sundsvall, Sweden.
Sexually deceptive orchids typically depend on specific insect species for pollination, which are lured by sex pheromone mimicry. European orchids often exploit specific species of wasps or bees with carboxylic acid derivatives. Here, we identify the specific semiochemicals present in , and in females of one of its pollinator species, .
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!