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The modified Mg : Al (3 : 1) hydrotalcite has been found to be an efficient catalyst in the conversion of carbamates into oxazolidin-2-ones under mild reaction conditions. A wide variety of oxazolidin-2-ones were obtained with excellent chemical yield.

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Oxazole derivatives R 0220 Modified Mg: Al Hydrotalcite in the Synthesis of Oxazolidin-2-ones. -(CWIK, A.; FUCHS, A.; HELL, Z.; BOEJTOES, I.; HALMAI, D.; BOMBICZ, P.; Org. Biomol. Chem. 3 (2005) 6, 967-969; Dep. Org. Chem. Technol., Budapest Univ. Technol. Econ., H-1521 Budapest, Hung.; Eng.) -Nuesgen 34-168

Isoxazole derivatives R 0240 Solid Base Catalyzed Synthesis of 5-Substituted 4,5-Dihydroisoxazoles. -Rehydrated hydrotalcite is found to be a suitable catalyst for the cyclization of ethyl nitroacetate and olefins to 4,5-dihydroisoxazoles. -(CWIK, A.; HELL*, Z.; FUCHS, A.; HALMAI, D.; Tetrahedron Lett. 46 (2005) 38, 6563-6566; Dep. Org. Chem. Technol., Budapest Univ. Technol. Econ., H-1521 Budapest, Hung.; Eng.) -Mais 52-106

1,3-dinitropropanes. -The hydrotalcite shown in the scheme is found to be a highly efficient catalyst for the nitroaldol reaction. It allows simple, eco-friendly, and diastereoselective synthesis of 2-nitroalkanols. At 100°C formation of 1,3-dinitro compounds such asIV) is possible which likely proceeds via ionic intermediates instead of dehydrated intermediates. -(CWIK, A.; FUCHS, A.; HELL*, Z.; CLACENS, J.-M.; Tetrahedron 61 (2005) 16, 4015-4021; Dep. Org. Chem. Technol., Budapest Univ. Technol. Econ., H-1521 Budapest, Hung.; Eng.) -Jannicke 35-078