查询词典 heliotropin

Since 2002, Institute of Coal Chemistry, Chinese Academy of Sciences has been developing a new technology to prepare high-purity glyoxylic acid by maleic anhydride ozonation, which has been completed, and now the research of the downstream products of glyoxylic acid including vanillin, heliotropin and the substituted mandelic acid is underway.

中科院山西煤化所从2002年开始进行研究，完成顺酐臭氧化法制备高纯乙醛酸新技术工艺的开发，现正进行乙醛酸下游产品香兰素、洋茉莉醛、取代扁桃酸的技术研究。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl-2-acctonc, phenylacetic acid, 1-phenyl-2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、3，4-亚基二氧苯基-2-丙酮、苯乙酸、1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

This paper discussed the property, aroma characteristic and application of heliotropin and reviewed its different kinds of synthetic routes.

概述了洋茉莉醛的性质、香气特征及其应用，综述了采用各种起始原料的洋茉莉醛合成工艺路线，并对合成洋茉莉醛生产的发展提出了建议。

Synthesis of Heliotropin;2. ation of heliotropin and reviwed its synthetic routes and suggested its development direction.

概述了洋茉莉醛的物理、化学性质及应用，综述了洋茉莉醛的合成工艺路线，并对它的发展方向提出了建议。

Through repetitious filtration to synthetic methods, it was proved that Stobe reaction can be used in the synthesis of γ-oxoacyl heliotropin.

反复筛选合成方法结果证明将Stobbe反应及其在合成γ-羰基羧酸的应用用于本研究工作中，初见成果。

General F-C acylization reaction can not achieve our purpose for γ-oxoacyliation to heliotropin.

常规的付克酰基化反应难以合成上述目标中间物。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl -2-acctonc, phenyl acetic acid, 1- phenyl -2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、 3 ， 4-亚基二氧苯基-2-丙酮、苯乙酸、 1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。