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- YOSHINO Takeshi
- 東京理科大学理学部
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- KIJIMA Ichiro
- 東京理科大学理学部
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- SUGIURA Michio
- 東京理科大学理学部
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- FURUYA Ryosuke
- 東京理科大学理学部
Bibliographic Information
- Other Title
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- フェノール類と不飽和二塩基酸の縮合に関する研究(第2報)
- 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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Abstract
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.
Journal
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- Journal of Synthetic Organic Chemistry, Japan
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Journal of Synthetic Organic Chemistry, Japan 21 (5), 373-376, 1963
The Society of Synthetic Organic Chemistry, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205311382144
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- NII Article ID
- 130000923271
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- NII Book ID
- AN0024521X
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- ISSN
- 18836526
- 00379980
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- NDL BIB ID
- 9213707
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed