Nickel chelate of dithiocarbamate derived from d or l-ephedrine gave one peak in high-performance liquid chromatography while that from racemic ephedrine gave two peaks, the same one and additional one. By measurement of areas of these peaks, optically active and racemic ephedrines were determined.
The formation of the cation radical of methyl viologen was established when an aqueous metallo-porphyrin, methyl viologen and reducing agent was irradiated by visible light, and the activities of photosensitizers were compared. When hydrogenase was added to the system, hydrogen evolution was observed.
Dichloro[1,1′-bis(diphenylphosphino)ferrocene]nickel(II) was found to be an effective catalyst for the cross-coupling of tert-butylmagnesium chloride with β-bromostyrene to give β-tert-butylstyrene selectively.