A novel and efficient copper-catalyzed cascade cyclization/trifluoromethylthiolation of unactivated olefins has been achieved with the stable readily available AgSCF3 as SCF3 source. range SCF3-substituted pyrrolines have easily obtained under mild conditions in good yields via present process. This method represents a facile rapid access to valuable fluorine-containing groups, it is amenable gram-scale synthesis.

Abstract A photoredox catalyzed trifluoromethyl radical‐triggered trifunctionalization of 5‐hexenenitriles via cyano group migration is reported. The high chemo‐selectivity even in the presence aryl or heteroaryl groups as competitors. This protocol provides a facile access to broad scope CF 3 ‐containing compounds with molecular complexity and functional diversity. success gram‐scale reaction versatility products derivative synthesis illustrate potential value this transformation synthetic...

Abstract A mild and highly efficient Cu‐catalyzed cascade cyclization/thiocyanation of unactivated alkenes bearing hydrazones has been developed. broad range SCN‐substituted pyrazolines have readily obtained in good to excellent yields with commercially available very cheap Cu(acac) 2 NH 4 SCN. This present method provides a rapid, facile, practical access valuable the important SCN functionality, it is amenable gram scale. magnified image

A new three-component 1,2-perfluoroalkyl trifluoromethylthiolation of alkenes via dual photoredox/copper catalysis has been established, affording a variety CnF2n+1/CF3S-containing molecules under mild conditions in redox-neutral manner. This protocol exhibits excellent functional group tolerance, broad compatibility with various and perfluoroalkyl iodides, potential utility the modification bioactive molecules.

A silver-catalyzed decarboxylative remote fluorination via a zwitterion-promoted 1,4-heteroaryl migration has been developed. variety of heteroaryl-tethered benzyl fluorides have readily synthesized with good regioselectivity under mild conditions. The zwitterion the substrate is suggested to accelerate migration, which determines this transformation.

A highly efficient copper-catalyzed cyclization/cyanation cascade of unactivated olefins bearing oximes is described. variety cyano-containing isoxazolines have been obtained in high yields with cheap Cu(NO3)2·3H2O as the catalyst and TMSCN non-metallic cyanide source. The present method provides a mild, simple, practical access to cyano-substituted amenable gram scale. simultaneous construction C(sp3)–CN C–O bonds can be achieved one step.

Abstract A photoredox‐catalyzed trifunctionalization of 5‐heteroaryl‐substituted 1‐hexenes via remote heteroaryl migration and a 5‐hexenenitriles cyano are reported. This protocol provides access to broad scope CF n R‐containing ketones with high molecular complexity functional group diversity. The reaction features mild conditions chemo‐ regioselectivities. success gram‐scale reactions the versatility products in derivative synthesis illustrated potential value this transformation synthetic...

A photoinduced copper-catalyzed enantioconvergent remote alkynylation of N-hydroxyphthalimide esters with terminal alkynes via 1,4-heteroaryl migration has been developed. broad scope heteroaryl-tethered chiral synthesized good regio- and enantioselectivities. The chiral-ligand-coordinated copper species plays a dual role as both the photoredox cross-coupling catalyst. This methodology provides new platform for alkynylations.

Abstract A visible‐light photoredox‐catalyzed tandem trifluoromethylation/cyclization/remote oxidation of 1,6‐dienes has been achieved. broad range trifluoromethyl group‐containing tetrahydrofurans or tetrahydropyrroles could be generated in good yields and with excellent diastereoselectivity by using dimethyl sulfoxide (DMSO) as the oxidant. The mild facile protocol affords direct access to group‐bearing via difunctionalization olefins. magnified image

A copper‐catalyzed trifunctionalization (trifluoromethylation, heteroarylation, and cyanation) of heteroaryl‐substituted 1‐hexenes via remote heteroaryl migration is reported. variety CF3 heteroaryl‐containing nitriles were readily constructed under mild conditions. The reaction features high chemo‐ regioselectivities represents a convenient method for the synthesis multifunctionalized molecules in organic synthesis.

We have developed a photoredox/Cu dual catalyzed enantioselective remote cyanation via 1,4-heteroaryl migration. Experimental and computational studies been carried out to reveal the reaction mechanism explain origins of regio- enantioselectivities process. This methodology exhibits mild conditions, broad substrate scope good enantioselectivities, which provides unique approach for catalyst-controlled asymmetric backbone recombination molecules functional group

An efficient, chemo- and regioselective Brønsted acid-promoted hydroamination reaction of hydrazone-tethered olefins towards 5-arylpyrazolines was developed.

Abstract A novel transition‐metal‐free iminotrifluoromethylation of unsaturated oxime esters has been achieved through Rhodamine B photoredox catalysis under mild conditions. This methodology provides facile access to various CF 3 ‐tethered pyrroline derivatives in high efficiency. The gram‐scale reaction demonstrates the potential value this protocol organic synthesis.

A novel curable liquid polysilane (CLS) containing reactive unsaturated bond and Si-H was synthesized from dichloromethylvinylsilae, methyldichlorosilae Na in presence of 18-crown-6 under sonication at relatively lower temperature its structure characterized by FT-IR, 1H-NMR. The cure behavior CLS investigated DSC,FTIR. Thermal stability cured examined TGA. results showed that the exhibits good anti-oxidation performance high temperature. And sinted exhibited resistance ceramic formability.

Boron-silicon-containing arylacetylene polymer (PBSA) was synthesized through polycondensation reaction among diacetylenebenzene Grignard reagent, boron trichloride and dimethyldichlorosilane, its structure characterized by Infrared spectroscopy (FT-IR), Nuclear Magnetic Resonance ( 13 C-NMR). The cure behavior of PBSA investigated using Differential Scanning Calorimetry (DSC), the thermal oxidative stability cured were studied Thermogravimetric Analysis (TGA) under nitrogen air,...