共查询到19条相似文献,搜索用时 93 毫秒
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综述了环十二酮在香料合成中的应用。环十二酮在大环化合物尤其是麝香酮的合成中发挥着非常重要的作用,并比较了几种合成方法的工业化前景。环十二酮在环十五内酯和其他物质的合成中也得到了广泛的应用。 相似文献
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回顾了内酯类麝香和二酯类麝香等的合成技术的历史发展趋势。1927年Kerschbaum发现了环十五内酯。十三碳二酸乙二醇酯是用十三烷二酸和乙二醇为原料合成的。以前十三烷二酸是以芥酸为原料合成,但是在1985年,日本矿业公司开始通过正构石腊发酵工艺生产十三烷二酸。硝基麝香是历史最悠久的合成麝香,1895年奇华顿公司商业经生产三硝基-间-叔-丁基甲苯。本文同时还对茚满类麝香和醚内酯类麝香进行了讨论。 相似文献
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α羟基环十五酮及3-羟基,甲基环十五酮合成麝香酮的方法 总被引:1,自引:0,他引:1
麝香酮是一种名贵的香料,用途广泛但来源稀缺。近半个世纪以来麝香酮的化学合成方法日渐丰富,但实现工业化的很少。从α羟基环十五酮和3-羟基,甲基环十五酮的属性研究中,总结出插入甲基法合成麝香酮的优越性。 相似文献
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人工合成已经成为麝香酮的主要来源,但由于原料供应和原料价格问题,许多合成途径都无法实现工业化生产。微生物法生产的长碳链二元酸为人工合成麝香提供了丰富廉价的原料资源,本文概述了以12-16碳二元酸为原料的麝香酮合成途径。 相似文献
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1 INTRODUCTION Musk ketone and musk xylene are important syn- thetic nitro-musks. They are high boiling substances and subject to decomposition under the condition of heat and light. When they are melted, the liquid mix- ture is very sticky, which lead to high resistance to heat and mass transfer and difficulty in solidification. As a result, it is reasonable to employ solution crys- tallization to separate and purify musk mixture. As the basis of solution crystallization, the solubility … 相似文献
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To evaluate the effect of two liquid phase on the separation of musks mixture, the phase equilibria of musk ketone musk xylene dimethyl sulfoxide heptane system were studied for the first time. The whole and every part of the phase equilibrium for the quaternary system were shown by three-dimensional phase diagrams, the liquid-liquid equilibria, solid-liquid equilibria and solid-liquid-liquid equilibria of the quaternary system were also shown. As a result, the compositions of musks in the equilibrium liquid phases were different from those in the feed, that is, musk ketone was enriched in dimethyl sulfoxide phase while musk xylene was enriched in heptane phase. So these equilibrium liquid phases were useful in separating musk ketone and musk xylene. On the basis of these results, a new process “two liquid phase extractive crystallization” was proposed to separate the eutectics of musk ketone and musk xylene. 相似文献
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建立了涡旋混合辅助超声萃取-气相色谱/质谱联用法测定化妆品中二甲苯麝香含量的分析方法。采用漩涡混合器混合样品,使样品基质均匀分散于萃取溶剂中,再利用超声波提取目标物。探讨了萃取溶剂种类、提取方式等因素对目标物萃取效率的影响;并甄选出合适的内标物,确定了较佳的特征离子及其丰度比。在优化的试验条件下,目标物二甲苯麝香质量浓度在0.1~4μg/mL范围内具有良好的线性关系,相关系数(R)为0.9991,平均回收率为88.44%~105.94%,相对标准偏差(RSD)为2.05%~4.67%,检出限为0.44mg/kg,定量限为1.45mg/kg。结果表明该方法简便、快速、灵敏、准确,适合于化妆品中的二甲苯麝香含量的测定。 相似文献
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The solid-liquid equilibria of musk ketone musk xylene, musk xylene 1,3-dimethyl-2,4-dinitro-5-tert-butyl benzene are measured by differential scanning calorimeter (DSC), these systems are proved to be simple eutectics. Moreover the melting points and the fusion enthalpies of musk ketone, musk xylene and 1,3-dimethyl-2,4-dinitro-5-tert-butyl benzene are also measured by the DSC. These solid-liquid equilibrium data and the heats of fusion are reported for the first time. Then UNIFAC model is used to correlate the solid-liquid equilibrium data.It is shown that the solid-liquid equilibria of musk systems can be predicted bv the UNIFAC model. 相似文献
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