Studies on Acetylenic Compounds. XXIII. A New Ring Closure of 2-Propynyl Ethers.
スポンサーリンク
概要
- 論文の詳細を見る
It has been reported that 2-naphthyl allylic ethers undergo the Claisen rearrangement to give naphthol derivatives. 2-naphthyl propargyl ether derivatives, [chemical formula] (R=H, CH_3,Ph.), replacing the double bond of allylic ethers by a triple bond, do not undergo the Claisen rearrangement but a new ring-closure to give 3H-naphtho [2,1-b] pyran derivatives. Moreover, 1-naphthyl derivatives, [chemical formula] also undergo the same ring-closure to give 4-phenyl-2H-naphtho [1,2-b] pyran. The structures of new pyran derivatives obtained by the new ring-closure were confirmed by the melting point, infrared and ultraviolet spectra of the authentic samples which were synthesized by another routes.
- 公益社団法人日本薬学会の論文
- 1962-10-25
著者
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岩井 一成
Takamine Laboratory, Sankyo Co., Ltd.
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井手 純也
Takamine Research Laboratory, Sankyo Co., Ltd.
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井手 純也
Sankyo Research Laboratories, Sankyo Co., Ltd.,
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井手 純也
Sankyo Research Laboratories Sankyo Co. Ltd.
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岩井 一成
Central Research Laboratories Sankyo Co. Ltd.
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