SciELO - Scientific Electronic Library Online

vol.61Performance and structure of LiNi0.5Mn1.5O4 prepared from various Ni precursors for lithium ion batteriesSynthesis of some benzimidazole-substituted benzotriazoles author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand



Related links

  • On index processCited by Google
  • On index processSimilars in Google


South African Journal of Chemistry

On-line version ISSN 1996-840X
Print version ISSN 0379-4350


ROSTAMI, Amin  and  JAFARI, Hadi. NBS as a powerful catalyst for the synthesis of β-hydroxysulphides with thiolysis of epoxides under mild reaction conditions. S.Afr.j.chem. (Online) [online]. 2008, vol.61, pp.115-118. ISSN 1996-840X.

N-Bromosuccinimide (NBS) catalyses the ring opening of various epoxides with different thiols in CH3CN at room temperature under mild reaction conditions. The corresponding β-hydroxysulphides are obtained in short reaction times and in good to high yields with nearly complete regioselectivity. The catalyst was compared with previously reported catalysts and only one that we have found [B(C6F5)3] gave the same regioselectivity, but the reaction time was much longer (4 h versus 5 min) and the yield was considerably lower. Zn(ClO4)2.6H2O gave slightly lower selectivity but higher yields. The reaction time was about 12 times longer.

Keywords : N-Bromosuccinimide; thiols; ring opening; epoxides; B-hydroxysulphides.

        · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License