- 作者: 葉炳賢
- 作者服務機構: Contribution from the Taiwan Provincial Industrial Research Institute
- 中文摘要: The essential oil from wild perilla contains 55% (-)-piperitone, 31% (-)-limonene, 6% α-caryophyllene, and 0.5% (-)-piperityl formate. 2, 4-Dinitrophenylhydrazone was found to be the most suitable derivative for the identification of piperitone. Partial racemization, that occurred during the formation of the semicarbazone and also during the hydrolysis of the semicarbazone, was confirmed by the isolation of a new optically active semicarbazone of (-)-piperitone. Reduction of (-)-piperitone with sodium and moist ether gave (+)-isomenthol in high yield. This will find application in stereospecific synthesis.
- 英文摘要: --
- 中文關鍵字: --
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