Bulletin of the Chemical Society of Japan p. 2366 - 2370 (1992)
Update date:2022-08-04
Topics:
Yamamoto, Makoto
Munakata, Hiroshi
Kishikawa, Keiki
Kohmoto, Shigeo
Yamada, Kazutoshi
5-Substituted 2-tributylstannylfurans which were synthesized by the reaction of corresponding 5-substituted 2-lithiofurans with tribitylstannyl chloride, were treated with two equimolar amounts of lead tetraacetate at room temperature to give corresponding 5-substituted 5-acetoxy-2(5H)-furanones in good yields.The 5-acetoxy-2(5H)-furanone was heated at 80 deg C in acetic acid-acetic anhydride containing a catalytic amount of concentrated sulfuric acid to give 5-alkylidene-2(5H)-furanone in moderate yield.
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