Lewis and Brönsted acid catalyzed Friedel–Crafts hydroxyalkylation of mucohalic acids: a facile synthesis of functionalized γ-aryl γ-butenolides
作者:Ji Zhang、Peter G. Blazecka、Timothy T. Curran
DOI:10.1016/j.tetlet.2007.02.009
日期:2007.4
A catalytic, green and practical method for Friedel-Crafts hydroxyalkylation of mucohalic acid has been accomplished. Reaction of mucohalic acids with various electron-rich aromatic compounds in the presence of catalytic (1 mol % to 10 mol %) In(OTf)(3) or Bronsted acid, such as H2SO4 in acetic acid provides gamma-aryl gamma-butenolides in moderate to excellent yield. (c) 2007 Elsevier Ltd. All rights reserved.
Pyridazines.<b>XV</b>. Synthesis of 6-aryl-5-amino-3(2<i>H</i>)-pyridazinones as potential platelet aggregation inhibitors
作者:Isabel Estevez、Enrique Raviña、Eddy Sotelo
DOI:10.1002/jhet.5570350634
日期:1998.11
Several 3(2H)-pyridazinones with amino groups at the 5-position of the pyridazine nucleus have been prepared. The 6-aryl-5-halo-3(2H)-pyridazinones obtained from mucochloric and mucobromic acid lead to the corresponding 5-alkylamino-3(2H)-pyridazinones, which were tested as plateletaggregationinhibitors.