A new environmental friendly clay catalyst for one-pot coiodination and epoxidation of alkenes

Journal of the Brazilian Chemical Society

Aguiar, Mônica R.M.P. de¹  Corrêa, Karen S.M.¹  Mattos, Marcio C.S. de¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil¹  Guarino, Alcides W.S.¹  Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil¹  Bernini, Rafael B.¹  Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil¹ 

关键词: epoxide;    coiodination;    iodohydrin;    clay;    alkenes;   

DOI  :  10.1590/S0103-50532007000800010

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

The commercial Brazilian clay Bentonit Brasgel™ was characterized by chemical and textural analyses, XRD, and 27Al and 29Si MAS-NMR, that indicated the presence of a-quartz and smectite as clay-minerals. This natural clay proved to be an efficient catalyst for the conversion of alkenes into epoxides by the reaction with iodine/water followed by in situ addition of KOH in hexane (80-91 % yield). Similar results were obtained with Bentonit Brasgel™ intercalated with Ag(I).

【 授权许可】

Unknown