Bulletin of the Chemical Society of Japan p. 1006 - 1009 (1980)
Update date:2022-08-02
Topics:
Takeshita, Hitoshi
Kumamoto, Masatoshi
Kuono, Isao
Troponoids were shown to form 2:1-complexes with β-cyclodextrin and 1:1 complexes with α-cyclodextrin.The photoisomerization of complexed tropolone and 2-methoxytropone gave optically active 1-hydroxy- and 1-methoxybicyclo<3.2.0>hepta-3.6-dien-2-ones in improved yields.The pyrolysis of the (+)-1-methoxybicyclo<3.2.0>hepta-3,6-dien-2-one gave the (+)-3-methoxybicyclo<3.2.0>hepta-3,6-dien-2-one, ruling out the two-fold supra-antara-1,3-sigmatropy.
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