水芹烯

β-水芹烯的微波合成

The microwave synthesis of β - phellandrene

人为物理损伤的马尾松树干与树枝的α-蒎烯、β-蒎烯和β-水芹烯含量差异显著。

The contents of α - pinene , β - pinene and β - phellandrene were significantly different between P. massoniana stem and branch in physically damaged states .

本文报导用环已烯经卤化反应、烷基化反应和Wittig反应合成天然杀虫剂β-水芹烯的方法。

The synthesis of natural insecticide β - phellandrene is reported by halogenation , alkylation and Wittig reaction from cyclohexene in this paper .

还对β-水芹烯在杀虫方面的应用进行了研究，实验表明：β-水芹烯对储粮常见害虫具有明显的杀灭和抑制作用。

The application test showed that synthetic β - phellandrene has a better toxicity effect on stored-grain pests .

水蒸气蒸馏法的提取物中鉴定出39种组分，其中的主要成分为α-蒎烯、β-蒎烯、β-水芹烯、异长叶烯、反式-石竹烯、莰烯。

Thirty-nine compounds were identified in the steam distillation extracts , the major components were α - pinene ,β - pinene ,β - phellandrene , trans-caryophyllene , isolongifolene and camphene .

在3个生理状态下，侧柏的不同部位都检测到有α-蒎烯、β-水芹烯和3-蒈烯释放，且这3种组分的相对百分含量也较高。

In three physiological states ,α - Pinene , and β - Phellandrene , 3-Carene are detected in different parts of P. orientalis , and their relative content are higher .

α-蒎烯，β-蒎烯和β-水芹烯在人为物理损伤与虫害状态的马尾松树干及树枝中含量差异较大。

There are large variations in the relative contents of α - pinene , β - pinene and β - phellandrene in stem or branch between physically damaged , oviposited and feeding-damaged states .

用气相色谱和质谱分析了精油的化学成分，主要为对-伞花烃36.253%，百里酚（包括香芹酚）19.934%和β-水芹烯13.957%。

Major chemical constituents of the essential oil , studied by gas chromatography and mass spectrometry , were p-cymene 30.253 % , thymol ( carvacrol included ) 19.934 % and β - phellandrene 13.957 % .

实验表明：采用微波裂解技术，以β蒎烯为原料，经磺化、微波裂解等两步反应制备β水芹烯合成路线短，且产物易分离，总收率为65.8%。

In this paper , the method of synthesis of β phellandrene from β pinene was reported . The results showed that the time of splitting reaction was shortened by microwave irradiation and the product was separated easily . The total yield was 65.8 % .