Regulatory nature of β-cyclodextrin in selective ring-opening during reduction of styrene oxide

Ramaswamy, Ravichandran and Divakar, S. (1999) Regulatory nature of β-cyclodextrin in selective ring-opening during reduction of styrene oxide. Journal of Molecular Catalysis A: Chemical, 137. pp. 31-39.

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Abstract

The cleavage of styrene oxide by different reagents like Raney nickel, palladium–carbon and sodium borohydride in the presence of b-cyclodextrin and its derivatives like b-CD-epichlorohydrin b-CD-polymer and heptakis-2,6-di-O-methyl-b-cyclodextrin DM b-CD showed distribution in formation of ethylbenzene, 1-phenylethanol and 2-phenylethanol. Formation of deoxygenated products like styrene and ethylbenzene were suppressed by b-CD and its derivatives under hydrogenation over Raney nickel favouring increase in proportion of 2-phenylethanol. b-CD and its derivatives regulated increase in formation of 1-phenylethanol under reduction by Pd–C and NaBH . Observed selectivities have been correlated 4 to arise directly from the disposition adopted by styrene oxide inside the b-CD cavity, the nature and manner of which has been arrived at from the spectroscopic studies UV and NMR of inclusion.

Item Type:	Article
Uncontrolled Keywords:	Beta-CD Styrene oxide; Selective ring-opening; Reduction; Deoxygenation; 1:1 Complex
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 27 Polymer Chemistry 600 Technology > 08 Food technology > 09 Food Microbiology
Divisions:	Food Microbiology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	21 Jun 2007 12:04
Last Modified:	20 Feb 2012 04:57
URI:	http://ir.cftri.res.in/id/eprint/1219

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