Journal of the Chemical Society. Chemical communications p. 874 - 875 (1988)
Update date:2022-07-29
Topics: Trapping Formation Fiveand Six-Membered Rings Intramolecular Wittig Reaction
Ohmori, Hidenobu
Maeda, Hatsuo
Ueda, Chihiro
Masui, Masaichiro
Reaction of the title phophoranes with homophthalic anhydride or 1,3-diphenylisobenzofuran in the presence of Me3SiCl gave the corresponding Diels-Alder adducts, indicating the transient intermediacy of cycloalkyn-2-ones with five- and six-membered rings.
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