Journal
TETRAHEDRON LETTERS
Volume 43, Issue 4, Pages 665-667Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(01)02230-4
Keywords
acetylene; regio- and stereoselection; dienes; furans
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A convenient generation of trifluoromethyl phenylsulfanyl acetylene was realized from 2-bromo-1-phenylsulfanyl-3,3,3-trifluoropropene. The reagent was reacted with carbanions to give (1E,3E)-2-trifluoromethylbutadienyl phenyl sulfides regio- and stereo selectively, which underwent intramolecular cyclization in decalin at 190degreesC or in acetic acid with 1,4-benzoquinone and sodium acetate to afford 3-trifluoromethyl-substituted furans in high yields. (C) 2002 Elsevier Science Ltd. All rights reserved.
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