Navegando por Palavras-chave "Cyclodimerization"

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    Lewis-acid catalyzed N-acyliminium ion cyclodimerization: synthesis of symmetrical 1,4-dioxanes
    (Elsevier B.V., 2015-02-25) Ali, Bakhat; Zukerman-Schpector, Julio; Ferreira, Fernando P. [UNIFESP]; Shamim, Anwar; Pimenta, Daniel C.; Stefani, Helici A.; Universidade de São Paulo (USP); Universidade Federal de São Carlos (UFSCar); Universidade Federal de São Paulo (UNIFESP); Inst Butantan
    The cyclodimerization reaction of N-substituted-5-hydroxy-pyrrolydinones promoted by BF3 center dot Et2O and HCl to obtain symmetrical 1,4-dioxane derivatives was achieved in moderate to good yields, mild conditions, and short reaction times. These transformations render a promising alternative route that provides access to diverse 1,4-dioxane derivatives with a wide structural diversity. (C) 2015 Elsevier B.V. All rights reserved.