V. Mironov, L. Burnaeva, G. Ivkova
Jan 1, 2013
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Phosphorus, Sulfur, and Silicon and the Related Elements
Abstract
Abstract The reactions of 2-ethoxy-3-phenylbenzo[d]-1,3,2-oxazaphosphorin-6-one with R-carbonylcarboxylic acids ethyl esters (R = CF3, Ph, and Me) lead to the formation of seven-membered heterocycles, 2-ethoxy-9-ethoxycarbonyl-2,8-dioxo-3-phenyl-9-R-benzo[d]-1,3,2-oxazaphosphepines. GRAPHICAL ABSTRACT