Base-Promoted Annulated Aromatization of Aryl Acetylenes with Dimethyl Sulfoxide to Access Symmetrical/Unsymmetric -Terphenyl.

A protocol for selective and efficient synthesis of symmetrical and unsymmetrical -terphenyls is presented among aryl acetylene and DMSO in the presence of KOH and methanol. In this reaction, two molecules of aryl acetylene contribute four carbons, and DMSO, as a dual carbon donor, provides two carbons to a new aromatic ring. This protocol can be tolerated for the electron-donating or disubstituted phenylacetylenes as well as the heterocyclic acetylene derivatives.

Catalyst-Free, Zn-Mediated Decarboxylative Coupling of Chlorostibines to Access Alkylstibines with Stable C(sp)-Sb Bonds.

Herein, decarboxylative C(sp)-Sb coupling of aliphatic carboxylic acid derivatives with chlorostibines to access alkylstibines has been achieved. This catalyst-, ligand-, and base-free approach using zinc as a reductant affords various kinds of benzyldiarylstibines and other monoalkyldiarylstibines and tolerates various functional groups, including chlorine, bromine, hydroxyl, amide, sulfone, and cyano groups. The late-stage modification and the gram-scale experiments illustrate its potential application.

Copper-Catalyzed Cyclization of 2-Alkynylanilines to Give 2-Haloalkoxy-3-alkyl(aryl)quinolines.

Herein we describe a method to produce 2-haloalkoxy-3-substituted quinolines via the cyclization of 2-alkynylanilines with TMSCF and THF. This synthetic method uses inexpensive and easy-to-handle TMSCF and employs a commercially available CuI catalyst to transform a broad range of 2-alkynylanilines into versatile 2-difluoromethoxy-3-substituted quinolines and 2-iodoalkoxy-3-substituted quinolines with excellent chemoselectivity.

Fabrication of TiO/FeO/CdS systems: effects of FeO and CdS content on superior photocatalytic activity.

A heterostructured material of CdS and FeO nanoparticle-modified TiO nanotube array (NTA) photoelectrode (TiO/FeO/CdS) is reported in this work. TiO/FeO was prepared by annealing TiO NTAs pre-loaded with Fe(OH), which was uniformly clung to TiO NTAs using sequential chemical bath deposition (S-CBD). Subsequently, CdS nanoparticles were deposited on TiO/FeO using the successive ion layer adsorption and reaction (SILAR) technique.

A pH-Dependent rhodamine fluorophore with antiproliferative activity of bladder cancer in Vitro/Vivo and apoptosis mechanism.

Herein, 26 rhodamine fluorophores were synthesized from readily available Rh-6G and relative amines at room temperature with good selectivity, functional groups compatibility and high yields. We found that one of them 3f showed pH-dependent anticancer bioactivity, with cell viability of 68.4% under pH 6.

Photo-Induced N-N Coupling of -Nitrobenzyl Alcohols and Indolines To Give -Aryl-1-amino Indoles.

A novel method to synthesize -aryl-1-amino indoles was established by the photoinduced N-N coupling reaction. This protocol is by treatment of -nitrobenzyl alcohols and indolines in the presence of TEAI and acetic acid with a 24 W ultraviolet (UV) light-emitting diode (LED) (385-405 nm) irradiation. The products bearing an aldehyde group can be further transformed to fluorescent probes based on Rhodamine 6G derivative , which shows a high specificity and sensitivity for Fe.

UV-Light-Induced N-Acylation of Amines with α-Diketones.

Herein, we develop a mild method for -acylation of primary and secondary amines with α-diketones induced by ultraviolet (UV) light. Forty-six examples with various functional groups are explored at room temperature with irradiation by three 26 W UV lamps (350-380 nm). The yield reaches 97%.

Recent Progress on Synthesis of ,'-Chelate Organoboron Derivatives.

,'-chelate organoboron compounds have been successfully applied in bioimaging, organic light-emitting diodes (OLEDs), functional polymer, photocatalyst, electroluminescent (EL) devices, and other science and technology areas. However, the concise and efficient synthetic methods become more and more significant for material science, biomedical research, or other practical science. Here, we summarized the organoboron-,'-chelate derivatives and showed the different routes of their syntheses.

Fabrication of layered (CdS-Mn/MoS/CdTe)-promoted TiO nanotube arrays with superior photocatalytic properties.

A novel (CdS-Mn/MoS/CdTe)-sensitized TiO nanotube arrays (NTAs) photoelectrode has been prepared by electrodeposite, successive ionic layer adsorption and reaction (SILAR) coupled with hydrothermal method. When a ZnS layer was added on the top of CdS-Mn/MoS/CdTe/TiO, a notable red-shift and high absorption was observed in the visible light region. The photocurrent density (mA/cm) systematically increases from TiO NTAs (0.