Ranu, Brindaban C. ; Jana, Ranjan (2005) Direct halogenation of alcohols and their derivatives with tert-butyl halides in the ionic liquid [pmIm]Br under sonication conditions - a novel, efficient and green methodology European Journal of Organic Chemistry, 2005 (4). pp. 755-758. ISSN 1434-193X
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/ejoc.20...
Related URL: http://dx.doi.org/10.1002/ejoc.200400597
Abstract
A novel halogenating reagent system for direct halogenation of alcohols has been developed. tert-Butyl bromide, chloride and iodide in combination with the ionic liquid [pmIm]Br have been found to convert alcohols into the corresponding bromides, chlorides and iodides under sonication conditions (or heating) in good yields. Although a variety of primary and secondary alcohols participated in this reaction without any difficulty, tertiary alcohols remained inert. Several alcohol derivatives such as OTMS, OTBDMS, OAc, OTS and OTHP are also transformed into the corresponding halides in one-pot fashion by this procedure. A plausible rationale for this transformation is also presented.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Halogenation; Ionic Liquid; Alcohols; Halides; Sonication |
| ID Code: | 42136 |
| Deposited On: | 02 Jun 2011 05:07 |
| Last Modified: | 02 Jun 2011 05:07 |
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