19744-66-2Relevant academic research and scientific papers
Copper-Catalyzed Dicarbofunctionalization of Unactivated Olefins by Tandem Cyclization/Cross-Coupling
Thapa, Surendra,Basnet, Prakash,Giri, Ramesh
supporting information, p. 5700 - 5703 (2017/05/04)
We present a strategy that difunctionalizes unactivated olefins in 1,2-positions with two carbon-based entities. This method utilizes alkyl/arylzinc reagents derived from olefin-tethered alkyl/aryl halides that undergo radical cyclization to generate C(sp3)-Cu complexes in situ, which are intercepted with aryl and heteroaryl iodides. A variety of (arylmethyl)carbo- and heterocycles (N, O) can be synthesized with this new method.
INTERMOLECULAR HYDROGEN TRANSFER IN UNSATURATED HYDROCARBONS INDUCED BY DIMERIC TITANOCENE
Mach, Karel,Petrusova, Lidmila,Antropiusova, Helena,Hanus, Vladimir,Turecek, Frantisek,Sedmera, Petr
, p. 2924 - 2936 (2007/10/02)
μ-(η5:η5-Fulvalene)-di-μ-hydrido-bis(η5-cyclopentadienyltitanium) and μ-(η5:η5-fulvalene)-μ-chloro-μ-hydrido-bis(cyclopentadienyltitanium) form a thermally stable complex which catalyzes the intermolecular hydrogen transfer in unsaturated hydrocarbons, in addition to isomerizations and cyclizations.Cyclic hydrocarbons disproportionate under catalysis to saturated and aromatic hydrocarbons, while linear olefins yield predominantly linear alkanes and high molecular weight tar.The catalyst enables the hydrocarbon system to approach the thermodynamicequilibrium through a series of substitution reactions between alkyl- and allyltitanocene-like species and olefins and dienes.The catalytic complex was characterized by UV and ESR spectra.About one half of overall titanium content could be converted to mononuclear η3-allyltitanocene-like species, stable up to 400 deg C.This exceptional thermal stability is ascribed to a firmly bound allyl containing ligand.
FORMATION OF SOME BICYCLIC SYSTEMS BY RADICAL RING-CLOSURE
Beckwith, Athelstan L. J.,Phillipou, George,Serelis, Algirdas K.
, p. 2811 - 2814 (2007/10/02)
The rates and stereochemistry of ring closure of the radicals (2), (9), (10), and (16) have been determined and rationalised.
