The brucine N-oxide promoted Morita-Baylis-Hillman (MBH) reaction of vinyl ketones with aldehydes has been achieved. The corresponding asymmetric version of MBH reaction was also investigated, and the electron-deficient aryl aldehydes have emerged as suitable reaction partners for vinyl ketones; where proline was employed as a co-catalyst. In this dual catalyst system, proline is believed to fo...

Poly (vinyl ethers) are compounds with great value in the coating industry due to exhibiting properties such as high viscosity, soft adhesiveness, resistance saponification and solubility water organic solvents. However, main challenge this field is synthesis of vinyl ether monomers that can be synthetized by methodologies transfer, reduction phosphate ether, isomerization, hydrogenation acetyl...

Aryl bromides and iodides in the presence of catalytic amounts of a palladacycle derived from acetophenone oxime and 2 equivalents of potassium acetate react with ethylene under ambient pressure (15-30 psi) to give the corresponding vinylarenes. The reactions work with both electron-deficient and electron-rich aryl compounds and tolerate wide variety of common functional groups. Vinyl bromides ...

Chiral N-tert-butylsulfinyl vinyl aziridine ligands prepared from a readily available (R)-tert-butanesulfinamide have been applied in the rhodium-catalyzed asymmetric 1,4-addition of aryl boronic acids to cyclic enones, which gives high yields and excellent enantioselectivities.

Secondary phosphine oxides react with vinyl sulfides (both alkyl- and aryl-substituted sulfides) under aerobic and solvent-free conditions (80 °C, air, 7-30 h) to afford 1-hydroxy-2-(organosulfanyl)ethyl(diorganyl)phosphine oxides in 70-93% yields.

A highly sensitive fluorescent turn-on probe specific for methylmercury species as well as inorganic mercury ions has been developed on the basis of mercury ion-promoted hydrolysis of a fluorescein-derived aryl vinyl ether.

In the Baylis-Hillman reaction of aryl aldehydes with phenyl vinyl ketone we have observed exclusive formation of diadducts 4, and that the yields of diadduct can reach 80% with increasing amounts of phenyl vinyl ketone. On the other hand, for phenyl acrylate and phenyl thioacrylate, only the normal Baylis-Hillman adduct was obtained. The effects of substituents were also examined and a plausib...

Living cationic polymerization is known for a good control over chain growth yielding polymers with well-defined molar mass distributions and low dispersities. However, the practical challenges involved in synthesis of poly(vinyl ether)s limited suitable post-polymerization modifications (PPM) via chemoselective click reactions. Herein successful controlled vinyl ethers bearing pendant CC doub...

A mechanistic study of arylations of aliphatic alcohols and hydroxide with diaryliodonium salts, to give alkyl aryl ethers and diaryl ethers, has been performed using experimental techniques and DFT calculations. Aryne intermediates have been trapped, and additives to avoid by-product formation originating from arynes have been found. An alcohol oxidation pathway was observed in parallel to ary...

The dicyano-substituted vinyl dipyrromethene and compound are near-planar and were prepared from a simple meso-aryl dipyrromethane via the DDQ adduct ; the unique structures of , and were confirmed by X-ray diffraction analysis.