書誌事項
- タイトル別名
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- Studies on the Condensation of Phenols with Unsaturated Dibasic Acids. II
- フェノールルイ ト フホウワ ニ エンキサン ノ シュクゴウ ニ カンスル ケンキュウ 2
- Condensation of m-Cresol with Fumaric Acid, Maleic Acid and Malic Acids.
- m-クレゾールとフマル酸,マレイン酸およびリンゴ酸の縮合
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説明
Detailed investigation on the synthesis of 7-methylcoumarin by condensation of m-cresol and fumaric acid, maleic acid or malic acid in the presence of sulfuric acid has been carried out, and the reaction mechanism wass discussed 7-methylcoumarin was obtained in slightly above 20% yield . In the case of malic acid was given the highest yield. The mechanism of reaction is the same as in the case of 6-methylcoumarin. Accordingly the first step is esterification, sulfuric acid being esterifying agent, and the second step is the formation of 7-methylcoumarin, sulfuric acid acting as a cyclization agent. It is considered the-Pechamann reaction have taken place in the case of malic acid.
収録刊行物
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- 有機合成化学協会誌
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有機合成化学協会誌 21 (5), 373-376, 1963
公益社団法人 有機合成化学協会
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詳細情報 詳細情報について
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- CRID
- 1390001205311382144
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- NII論文ID
- 130000923271
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- NII書誌ID
- AN0024521X
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- ISSN
- 18836526
- 00379980
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- NDL書誌ID
- 9213707
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- データソース種別
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- JaLC
- NDL
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