中间体

In China an eight-step approach to the cis-bicyclic amine was adopted, including five-step route to cyclopentane-...

国内工业生产方法是以环己酮为原料经五步反应合成中间体1，2-环戊烷二甲酸，再经过三步反应完成顺式构型的建立和氮杂五元环的合成。

Therefore, the mechanism of the ring-opening process for electron-deficient cyclopropane derivatives was fully confirmed by the intermediates monitored.

因此，贫电子三元环衍生物的开环反应过程的机理因检测到的中间体得到了很好的证明。

Cyclopropane compounds areimportant reaction intermediates of organic systhesis and cyclopropane subunits arefound in many natural or unnatural products.

环丙烷衍生物是有机合成中常用的一类重要的反应中间体，手性的环丙烷衍生物在不对称合成中很有价值。

A novel isomer of furazano energetic compound 3,4-diaminofurazanofuroxan was synthesized by the dimeric ring-close reaction of transitional intermediate 3-amino-4-cyanofurazan oxide after the energetic compound 3-amino-4-chloroximinofurazan was treated with diluent alkali at low temperature, The yield of DAFF isomer could be over 66.3% and its single crystal was cultivated.

将含能化合物3-氨基－4-氯肟基呋咱在低温下用稀碱处理后发生过渡中间体3-氨基－4-氰基呋咱氧化物的二聚关环反应合成了新型呋咱类含能化合物3，4-二氨基呋咱基氧化呋咱异构体，产率达66.3%。

While conducting studies on deamination of commercially available phenethylamines, the scientists found that the intermediate imine can react further to yield aryl-substituted pyrroles 1 in good yields.

在研究上买到phenethylamines酰胺、科学家发现能进一步反应中间体亚胺芳产量取代吡咯-1良好收益。

Hydroxyl octanoic acid(1) was synthesized from heptaldehyde by a four-step reaction of nucleophilic substitution,displacement reaction,acid hydrolysis and deaminization.

以正庚醛为原料，经过亲核取代、置换反应、酸水解及碱化脱氨等4步反应合成了制备3，6-二己基-1，4-二氧杂-2，5-二酮的中间体——α-羟基辛酸(1)；1经对甲苯磺酸催化脱水得辛交酯。

It is used extensively in industrial processing of metals and concentrating of some ores; in boiler scale removal, food processing, metal cleaning, and pickling; and as a chemical intermediate, laboratory reagent, and alcohol denaturant.

工业上广泛使用盐酸来处理金属和提炼某些矿物，或用于锅炉除垢、食品加工、金属清洁和酸洗，还可作为化学中间体、实验室试剂以及酒精变性剂。

It is used extensively in industrial processing of metals and concentrating of some ore s; in boiler scale removal, food processing, metal cleaning, and pickling; and as a chemical intermediate, laboratory reagent, and alcohol denaturant.

工业上广泛使用盐酸来处理金属和提炼某些矿物，或用于锅炉除垢、食品加工、金属清洁和酸洗，还可作为化学中间体、实验室试剂以及酒精变性剂。

Catechol with high deoxidize ability is an important chemical intermedia.

邻苯二酚(Catechol，1，2-benzenediol，以下简称CAT)是一种重要的化工中间体。

The intermediate of flazasulfuron weedicide ,2-amino-4,6-dimethoxypyrimidineis conveniently obtained by treating 2-amino-4,6-dihydroxypyrimidinewith diazomethane at 20 °C for 24h.

本文利用硝酸胍和丙二酸二乙酯为起始原料，经环合及甲氧基化两步反应得到除草剂啶嘧磺隆的中间体：2-氨基-4，6-二甲氧基嘧啶。

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。