Journal
TETRAHEDRON
Volume 63, Issue 51, Pages 12583-12594Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2007.10.036
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The synthesis of trans-3-diethoxyphosphoryl-4-aryl-3,4-dihydrocoumarins from electron-rich hydroxyarenes and (E)-3-aryl-2(diethoxyphosphoryl)acrylic acids has been achieved by using CF3SO3H as a catalyst. The products could be easily transformed to the corresponding alpha-methylene-delta-valerolactones by means of the Horner-Wadsworth-Emmons reaction. (c) 2007 Elsevier Ltd. All rights reserved.
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