Abstract
The behavior of several epoxides when treated with NbCl5 was studied. In general, the studied epoxides reacted rapidly with NbCl5, giving, in most cases, more than one product (chlorohydrins, products containing solvent residues, as well as rearrangement products). A detailed study was performed to verify the effects of the temperature (rt, 0°C, or −78°C) and of the NbCl5 molar concentration on the composition of the products, yield, and time required for the reactions.
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Acknowledgments
The authors thank the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), the Coordenadoria de Aperfeiçoamento de Pessoal do Nível Superior (CAPES), and the Financiadora de Estudos e Projetos (FINEP) for financial support. We also thank CBMM–Companhia Brasileira de Mineralogia e Mineração for NbCl5 samples.