New approach to 4-phenyl-β-aminotetralin from 4-(3-halophenyl)tetralen-2-ol phenylacetate
作者:Adam S. Vincek、Raymond G. Booth
DOI:10.1016/j.tetlet.2009.06.099
日期:2009.9
Mixed trifluoroacetyl phenylacetyl anhydride and 3-halostyrenes (fluoro, chloro, and bromo) or vinylcycloalkanes (cyclohexyl and cyclooctyl), undergo cascade Friedel-Crafts cycli-acylalkylation. enolization, and O-acylation to give 4-substituted tetralen-2-ol phenylacetates, Without additional solvent in good yields. Base alcoholysis of 4-phenyltetralen-2-ol phenyl acetate reveals the tetral-2-one for asymmetric transfer hydrogenation. Bromophenyltetralen-2-ol phenylacetate undergoes Suzuki coupling, and provides a short route to trans-4-phenyl-beta-aminotetralin. (C) 2009 Elsevier Ltd. All rights reserved.