Bharavi Labs introduce two types of iodobenzene resins

Date Posted: Thursday, June 20, 2002

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Bharavi Labs introduce two types of polymer-bound iodobenzene resins providing polymer-bound iodine for organic synthesis. The high-load (~4 mmol iodine/g) product, though based on 1% cross linked polystyrene-divinylbenzene copolymer, is soluble in organic solvents like DCM and THF from which it may be precipitated by ethanol. Bharavi offer 100 kg to 1000 kg lots of 1% polystyrene-divinylbenzene (100-200 or 200-400 mesh sizes) and Merrifield resins (Cl loading to be specified by the user). The second type is 4-iodophenol linked to PS-DVB via a benzyl ether linkage. It is an insoluble polymer with an iodine loading of ~2 mmol/g. Both can be converted into hypervalent iodine reagents for organic synthesis (see: S. V. Ley, et al., J. Chem. Soc. Perkin I, 1999, 669-671)

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