An organocatalytic asymmetric epoxidation reaction using iminium salt catalysts is described, in which the stoichiometric persulfate oxidant is generated electrochemically. This system offers comparable ees to the use of commercially available persulfate. Electrochemically generated percarbonate ion is also a successful and novel oxidant system for use with iminium salts

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Polyphenylalkane derivatives Q 0720Imidazole-Based Solid-Supported Catalysts for the Benzoin Condensation. -Polymer-supported imidazolium salt per-catalysts are reported for the benzoin condensation of aromatic aldehydes. -(STOREY*, J. M. D.; WILLIAMSON, C.; Tetrahedron Lett. 46 (2005) 43, 7337-7339; Dep. Chem., Univ. Aberdeen, Aberdeen AB24 3UE, UK; Eng.) -Mais 05-079

Key indicators: single-crystal X-ray study; T = 120 K; mean (C-C) = 0.002 Å; R factor = 0.032; wR factor = 0.080; data-to-parameter ratio = 10.1.In the chiral title compound, C 15 H 14 N 2 , the dihedral angle between the mean planes of the aromatic rings is 81.59 (4) . An intermolecular C-HÁ Á ÁN interaction (HÁ Á ÁN = 2.50 Å ) involving the chiral C atom results in [100] chains of molecules in the crystal structure.