The role of neat substrates in phase-vanishing and tandem phase-vanishing reactions
作者:Nicole Windmon、Veljko Dragojlovic
DOI:10.1016/j.tetlet.2008.09.007
日期:2008.11
Phase-vanishing reactions are triphasic reactions, which involve a reagent, a liquid perfluoroalkane as a phase screen and a Substrate. Aromatization, isomerization and halogenation of neat Substrates under phase-vanishing conditions gave the expected products in good to excellent yields. In tandem single-phase-phase-vanishing reaction, two reactants, placed in the top phase, afforded the intermediate, which in a Subsequent phase-vanishing reaction reacted with the reagent from the bottom phase to give the final product. The reaction worked well under solvent-free conditions on liquid Substrates and intermediates. With solids, results were better if an additional solvent was employed. (C) 2008 Elsevier, Ltd. All rights reserved.