Results 201 to 210 of about 397,176 (340)

Water‐Mediated 1,7‐Palladium Aryl‐to‐Aryl Migration in an Unusual Aryne Trimerization Enables the Synthesis of Multihelicenes with Profoundly Hindered Stereogenic Axes

Advanced Synthesis &Catalysis, EarlyView.
In the presence of a Pd0 catalyst, large π‐extended arynes trimerize in an unusual manner to forge extremely compact and strained chiral benzenoids. This new trimerization reaction involves a 1,7‐Pd isomerization, a rare and poorly understood process that is elucidated.
Albert Artigas, Manuel A. Ortuño, Jesús Castro‐Esteban, Michel Giorgi, Diego Peña, Dolores Pérez, Yoann Coquerel   +6 more
wiley   +1 more source

Biochemical and haematological assessment of workers exposed to some petroleum products in Enugu Urban, Enugu State, Nigeria

, 2007
EO Ukaejiofo, Thomas Nubila, SO Ike
openalex   +2 more sources

Rhodium‐Catalyzed Oxidative CH o‐Arylation of s‐Aryltetrazines with Aryl Boronic Acids: One‐Step Selective Access to T‐Shaped and Z‐Shaped Polyaromatics

Advanced Synthesis &Catalysis, EarlyView.
A one‐step regioselective access to T‐Shaped and Z‐Shaped polyaromatics s‐tetrazines by a rhodium‐catalyzed oxidative CH o‐functionalization is reported. Electron‐rich aryl coupling partners display a higher reactivity than electron‐poor aryl, and allow the formation of poly(hetero)aromatic derivatives while avoiding 1,4‐azaphilic addition of the ...
Oumaima Abidi, Gaëlle Divoux, Loris Gelin, Hélène Cattey, Paul Fleurat‐Lessard, Jean‐Cyrille Hierso, Julien Roger   +6 more
wiley   +1 more source

An improved synthesis of TRβ-selective thyromimetic GC-1. [PDF]

Sci Rep
Chu X, Wang J, Li Y.
europepmc   +1 more source

Effect of diets contaminated with crude petroleum products (Bonnylight and Forcados) on enzyme activity of Wistar albino rats

, 2007
JO Akaninwor, EA Okeke
openalex   +2 more sources

Haematologic and biochemical implications of inhalation of fumes of petroleum products [PDF]

, 2014
JC Isirima, BE Angalabiri-Owei
openalex   +1 more source

5,7‐Membered Cyclometallated Gold(III) Complexes with Pyridine‐Phenyl‐Oxazoline N^C^N Ligands as Catalysts for Organic Transformation Reactions Under Silver‐Free Conditions

Advanced Synthesis &Catalysis, EarlyView.
A series of 5,7‐membered cyclometallated gold(III) complexes with N^C^N tridentate ligands are prepared via transmetalation of pyridine‐phenyl‐oxazoline ligand‐containing organomercury compounds with potassium gold(III) chloride (KAuCl4) for catalysis.
Yosephine Tania Limanto, Karen Ka‐Yan Kung, Aries Kwok‐Heung Chan, Nathanael Chun‐Him Lai, Man‐Kin Wong   +4 more
wiley   +1 more source

Comprehensive Characterization of the Molecular Structure and Properties of Pitch-like Products from Coal Dissolution at Mild Temperature Using Heavy Solvents of Coal and Petroleum Origin. [PDF]

Materials (Basel)
Kuznetsov P, Avid B, Kuznetsova L, Fan X, Xu JF, Kamenskiy E, Lyrschikov S.   +6 more
europepmc   +1 more source

Bifunctional Organocatalysts and Brønsted Bases in Cooperative Catalysis for the Asymmetric [4 + 2] Cycloaddition of In Situ‐Generated Dienes from Isochromane‐3,4‐Diones with Nitroalkenes

Advanced Synthesis &Catalysis, EarlyView.
Herein, the first asymmetric [4+2] cycloaddition is reported, utilizing in situ‐generated dienes from isochromane‐3,4‐diones and nitroalkenes, catalyzed by a bifunctional thiourea organocatalyst and Brønsted base cocatalysts, yielding highly enantioselective bridged and spiro lactones, with further investigations into novel reactivity and product ...
Mohammad Sadeq Mousavi, Consiglia Tedesco, Antonio Massa   +2 more
wiley   +1 more source

Isochromene and Dihydroisobenzofuran Electrosynthesis by a Highly Regiodivergent Cyclization of 2-Ethynylbenzaldehydes. [PDF]

J Org Chem
Martins GM, Simoso GB, de Castro PP, de Lucca F, Mendes SR, Brocksom TJ, de Oliveira KT.   +6 more
europepmc   +1 more source