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Organo-phosphorus compounds S 0080 Efficient Synthesis of Cyclic β-Oxophosphoranes by Microwave-Assisted Reaction of Cyclic Phosphine Oxides and Dialkyl Acetylenedicarboxylates. -The procedure allows the preparation of the target compounds within a few hours compared to the thermal version (7-14 days) and avoids polymerization of the diester substrate. -(KEGLEVICH*, G.; DUDAS, E.; SIPOS, M.; LENGYEL, D.; LUDANYI, K.; Synthesis 2006, 8, 1365-1369; Dep. Org. Chem. Technol., Budapest Univ. Technol. Econ., H-1521 Budapest, Hung.; Eng.) -Mais 35-184

Organo-phosphorus compoundsOrgano-phosphorus compounds S 0080 Fragmentation-Related Phosphinylations Using 2-Aryl-2-phosphabicyclo[2.2.2]oct-5-ene-and -octa-5,7-diene 2-Oxides. -New aryl-phosphabicyclooctenes [cf. (I)/(II)] and aryl-phosphabicyclooctadienes [cf. (VII)/(VIII)] are synthesized and utilized in photo-and thermally-induced phosphinylation reactions of alcohols, primary amines and hydroquinone. -(KEGLEVICH*, G.; SZELKE, H.; BALINT, A.; IMRE, T.; LUDANYI, K.; NAGY, Z.; HANUSZ, M.; SIMON, K.; HARMAT, V.; TOEKE, L.; Heteroat. Chem. 14 (2003) 5, 443-451; Dep. Org. Chem. Technol., Budapest Univ. Technol. Econ., H-1521 Budapest, Hung.; Eng.) -F. Santoso 45-153

Enantioselective syntheses Enantioselective syntheses O 0031Phase Transfer Catalyzed Asymmetric Epoxidation of Chalcones Using Chiral Crown Ethers Derived from D-Glucose, D-Galactose, and D-Mannitol. -Among 15 monosaccharide-based monoaza-15-crown-5 ethers tested, glucose-derived crown ether bearing a hydroxypropyl substituent at the nitrogen is found to be the most effective catalyst in the epoxidation of chalcones. A significant influence of the substituents at the aromatic rings on the yields and enantioselectivities is observed. -(BAKO, T.; BAKO*, P.; KEGLEVICH, G.; BOMBICZ, P.; KUBINYI, M.; PAL, K.; BODOR, S.; MAKO, A.; TOKE, L.; Tetrahedron: Asymmetry 15 (2004) 10, 1589-1595; Dep. Org. Chem. Technol., Univ. Technol. Econ., H-1521 Budapest, Hung.; Eng.) -Klein 38-038

Organo-phosphorus compoundsOrgano-phosphorus compounds S 0080 Synthesis and Fragmentation of New 2-Phosphabicyclo[2.2.2]octene 2-Oxides. -(KEGLEVICH*, G.; SZELKE, H.; TAMAS, A.; HARMAT, V.; LUDANYI, K.; VASKO, A. G.; TOKE, L.; Heteroat. Chem. 13 (2002) 7, 626-632; Dep. Org. Chem. Technol., Tech. Univ. Budapest, H-1521 Budapest, Hung.; Eng.) -M. Kowall 11-178

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