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

Journal of the Brazilian Chemical Society

Karen S.m. Corrêa²  Rafael B. Bernini¹  Marcio C.s. De Mattos¹  Mônica R.m.p. De Aguiar²  Alcides W.s. Guarino¹ 

[1] ,Universidade do Estado do Rio de Janeiro Instituto de Química Rio de Janeiro RJ ,Brazil

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

DOI  :  10.1590/S0103-50532007000800010

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 alpha-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】

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