Pd has been immobilized on the surface of dopamine-functionalized ferrite nanoparticles, ([Fe3O4-Dopamine-Pd]); their use as magnetic retrievable and recyclable catalysts for O-allylation of phenols with allylic acetates in water is described for easy access to allyl ethers in open aerial atmosphere. Phenols undergo unprecedented allylic substitution reactions with various allylic acetates under refluxing conditions (3-10 hours); mild base, sodium bicarbonate, is adequate to produce the allyl ethers in good yields. The catalyst was recycled for 5 consecutive reactions without any significant loss of efficiency. Aqueous reaction medium, ease of recovery using an external magnet, efficient recycling and the high stability of the catalyst renders the protocol economic and sustainable. Figure 1. <img src='https://acs-archive-assets2.s3.amazonaws.com/239nm/uploads/15807_san_fran.jpg' alt='' />

Aqueous O-allylation of phenols using a magnetically separable nano-catalytic system

243rd National Meeting (2012)

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