Reactivity of 2-methylene-1,3-dicarbonyl compounds. Syntheses of 2,2,3-trisubstituted-3,4-dihydro-2H-pyrano(3,2-c)(1)benzopyran-5-ones.
抄録
Michael condensation of 2-methylsulfinylmethyl-1, 3-dicarbonyl compounds (3) or 2-methylene-1, 3-dicarbonyl compounds (4) with 4-hydroxycoumarin (5) at ambient temperature gave 2-[(4-hydroxycoumarin-3-yl)methyl]-1, 3-dicarbonyl compounds (6). Treatment of 6 with methanolic hydrogen chloride resulted in the regioselective formation of 2, 2, 3-trisubstituted-3, 4-dihydro-2H-pyrano[3, 2-c][1]benzopyran-5-ones.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 31 (8), 2887-2891, 1983
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390001204166845568
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- NII論文ID
- 130003769442
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- ISSN
- 13475223
- 00092363
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可