Journal of the Brazilian Chemical Society
versión impresa ISSN 0103-5053
VILLEGAS, Raul A. S et al. An environmentally friendly preparation of iodohydrins from alkenes mediated by clay-minerals. J. Braz. Chem. Soc. [online]. 2004, vol.15, n.1, pp. 150-152. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532004000100024.
Iodohydrins are useful intermediates in organic synthesis for the preparation of epoxides. Herein is reported the preparation of iodohydrins in good yields by the reaction of alkenes (ciclohexene, styrene, a-methylstyrene, and 1-octene) with iodine and water at room temperature, in presence of acid commercial clays (K-10 and KSF) and natural Brazilian clays (F-101 and F-117), being the best results obtained with Brazilian clays (61-90%). The XRD results confirmed that the clays belong to the smectite clay-mineral group and K-10, KSF and F-117 have other clay-minerals in their structures.
Palabras llave : iodohydrins; clay-minerals; green chemistry; alkenes; eletrophilic addition.