A series of acyclic anion receptors containing chalcogen bond (ChB) and halogen (XB) donors integrated into a neutral 3,5-bis-triazole pyridine scaffold are described, in which systematic variation the electronic-withdrawing nature aryl substituents reveal dramatic modulation sigma-hole donor atom potency for recognition. Incorporation strongly electron-withdrawing perfluorophenyl units appende...

Abstract We report the synthesis of 4‐aryl‐2‐piperidone, 4‐arylpiperidine motifs, antituberculosis molecule Q203 (Telacebec) and its analogues. Direct lactamization β ‐C−H arylated N ‐phthaloyl δ ‐aminopentanoic acid carboxamides yielded 4‐aryl‐2‐piperidone (4‐aryl‐ ‐valerolactam) scaffolds. The required were assembled via Pd(II)‐catalyzed, 8‐aminoquinoline‐aided, sp 3 activation arylation meth...

synthesis of 4-(n,n- dimethylamino)-3-aryl-3-butene-2-one, ethyl-5-aryl-4-oxo-4h-pyran-2-carboxylate, ethyl-5-aryl-4-pyridones-2-carboxylate and 5-aryl-3-cyano-5-methyl-2-pyridones (aryl=3-thienyl, 2-furyl) are described.

Among various all-inorganic halide perovskites exhibiting better stability than organic-inorganic halide perovskites, a-CsPbI3with themost suitable band gap for tandem solar cell application faces an issue of phase instability under ambient conditions. We discovered that a small amount of two-dimensional (2D) EDAPbI4 perovskite containing the ethylenediamine (EDA) cation stabilizes the a-CsPbI3...

The important role of transition metal-catalyzed cross-coupling in expanding the frontiers of accessible chemical territory is unquestionable. Despite empowering chemists with Herculean capabilities in complex molecule construction, contemporary protocols are not without their Achilles' heel: Csp(3)-Csp(2)/sp(3) coupling. The underlying challenge in sp(3) cross-couplings is 2-fold: (i) methods ...

The determination and quantification of halide impurities in ionic liquids is highly important because halide ions can significantly influence the chemical and physical properties of ionic liquids. The use of impure ionic liquids in fundamental studies on solvent extraction or catalytic reactions can lead to incorrect experimental data. The detection of halide ions in solution by total reflecti...

The local structures of the inorganic component of selected organic–inorganic perovskites (OIPs) are studied by analyzing the X-ray pair distribution function. Whereas the long-range structure of each perovskite is the untilted Pm3jm phase, all the OIPs showed significant internal distortion of the octahedra. Varying the halide has a significant impact on the lattice constant. There is evidence...

The use of transition-metal catalysis to form new C C bonds is an important tool in organic synthesis. Palladiumand nickel-catalyzed C C bond-forming reactions have been extensively explored and are well understood. The use of iron as the catalyst has gained much less attention, despite the innovative work of Kochi et al. in the 1970s. Recently, several groups have turned their attention toward...

Two halide sensitive acridinium ̄uorophores have been synthesised and immobilised in a hydrophilic copolymer. Thin ®lms of the copolymers swell in aqueous media allowing dye ̄uorescence to be dynamically quenched by the di€usion of halide ions. The new sensor ®lms have been characterised in terms of their sensitivity and selectivity towards halide and are compared to ®lms containing both bound ...