Reaction of ferrocenoyl chloride with [Et<sub>3</sub>NH] [(μ-CO)(μ-RS) Fe<sub>3</sub>=(CO)<sub>?</sub>] complexes gave bridging ferrocenoyl complexes(μ-FcCO)(μ-RS)Fe<
The cycloaddition reaction of ketene and formaldehyde,lesding to 2-oxetanone,has been studied theoretically by means of RHF/3-21G.This reactionis believed to be
Treatment of aromatic α-hydroxy ketones with an activated Ti(O) reagent, prepared by reduction of TiCl<sub>3</sub> with a Zn-Cu couple, effects an intermolecular
From the whole plant of Cynomorium songaricum a new triterpene was isolated together with acetyl ursolic acid, ursolic acid, β-sitosterol palmitate, β-sitoste