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1-(α-Alkoxyalkyl)benzotriazoles 1a−d add to phenyl vinyl ether to form key intermediates 4a−d, which readily undergo lithiation and subsequent trapping by a variety of electrophiles to give the expected substituted derivatives 7a−d, 9a−c, 11, 13, 15, and 18 in high yields. Subsequent hydrolysis of these compounds provides a novel high-yield acyl anion synthon approach for the synthesis of β-alkoxy ketones 8 or α‘-functionalized β-alkoxy ketones 10, 12, 14, 16, and 19 by short procedures from readily available starting materials.

Irradiation of an acetonitrile solution of phenyl vinyl ether in the presence of various metal complexes[Fe(III) and Mn(II) complexes] gave two cyclodimers. Similar irradiation of 1,1-dimethylindene and 1,1-diphenylethylene afforded the corresponding cyclodimers. In these photodimerization, the metal complexes with ligands such as 2,2′-bipyridine and 1,10-phenanthroline served as catalysts for electron-transfer reaction.

Styrene, α-ethylstyrene and phenyl vinyl ether are hydroformylated asymmetrically in the presence of chlorocarbonylbis(diphenylneomenthylphosphine)rhodium (I) as catalyst.

The photocycloaddition reaction of 6-substituted phenanthridines and electron-rich olefins, such as trans-anethole and phenyl vinyl ether, is described. This reaction proceeds from the 1(π,π*) states of 6-substituted phenanthridines via the exciplex to give azocine and/or azetidine derivatives in ethanol.

The stereoselectivity in the photocyclodimerization of phenyl vinyl ether (D) via electron-transfer depends strongly upon the concentration of D and the reaction temperature.

Influence de la modification de la surface, de la purete et de sa structure de CdS sur la reactivite du semiconducteur