Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.

以间硝基苯甲醛,乙酰乙酸乙酯,氨化试为原料。

As chemical reagent and corrodent of integrated plate.

作化学试和集成电路电镀板的消蚀。

In stead of using butyl nitrite and absolute ethyl-ether as reagents,in an improved method,cupferron.

本文介绍了以亚硝酸乙酯代替亚硝酸丁酯,用氯苯代替无水乙醚合成铜铁试的新工艺。

The color reaction of Cadion 2B with silver(I) was studied.

研究了镉试2B固相萃银的方法。

The trithiocarbonate moiety in turn, functions as a reversible addition fragmentation chain transfer (RAFT) agent.

线形三硫酯基团可以进一步作为RAFT试控制其后的聚合。

They experimented with new reagents and succeeded.

"他们用新试做了试,获得了成功。"

Alkylation of ambident nucleophiles different places by using phase-transfer catalytic agent were studied in this paper.

本文研究了在相转移催化条件下对两可亲核试不同位置的烷基化。

The products were monobromo-compounds on which the bromine atom occupied the p-position of the activating group.

该试条件温和,选择性好,是一种有效的活泼芳环的溴化。

Catalytic synthesis of phenetole by ethylation of phenol with diethyl carbonate(DEC)in fixed bed reactor was investigated.

以碳酸二乙酯(DEC)为乙基化试,与苯酚在气固相条件下催化合成苯乙醚。

This method was at low cost, harmless and suitable for extracting,separating and preparing mesaconitine,aconitine and hypaconitine.

方法中所用试成本低、毒性小,适用于乌头碱、中乌头碱、次乌头碱的提分离以及对照品的制备。

It is taking hychroperoxides as masking agents, alumnium in titanium alloys was meascred with aluminon ammonium aurintri-carboxylate.

研究了以过氧化氢作为掩蔽,用铝试钛合金中铝的方法。

By access to information,determination methods of alumina are mainly including chrome azurol S method and aluminon method.

经查阅资料，铝的主要方法有铬天青S法和铝试法。

Vessels : bell glass, flume, airer, alcohol burner, reagent bottles etc.

钟罩、水槽、干燥器、酒精灯和各种规格试瓶。

Cleavable block copolymers could be cleaved into separate homopolymers under external stimuli (such as heat, light or agents).

这种聚合物在外部刺激下（如热、光、特殊试等）可以发生解离，从而变为两段均聚物。

The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

用溴代苯乙酮和溴苄为烷基化试,以高产率和100%的转化率以及100%的选择性得到了酚的O-烷基化产物。

Abstract： One-pot synthesis method of diarylmethylamines was investigated using aryl lithium salt，thioformamide and aryl Grignard reagent.

摘 要： 由芳基锂盐、硫代甲酰胺和芳基格氏试一锅法合成了代二芳基甲胺。

In this thesis, the carbozincation of acetylenic sulfones and its applications in the stereoselective synthesis of polysubstituted olefins were investigated.

本论文研究了炔基砜的碳锌化及其原位产生的α-磺酰基烯基锌试在立体选择性合成多代烯烃中的用。

Objective To study the cross contamination of alkaline picric acid in glucose determination by hexokinase(HK) method and its preclusion measures.

目的探讨肌酐试苦味酸对血糖己糖激酶法的交叉污染及排除方法。

Because the reaction is initiated by the attachment of an electrophile, the process is called an electrophilic addition reaction .

因为是由亲电试的附加而开始的，所以这个过程叫做亲电加成。

Three strategies (additive, chiral auxiliary or chiral reagent) were developed to improve the diastereoselectivity or enantioselectivity of the ylide cyclopropanation reactions.

通过添加、手性辅基、手性试等3种策略,分别控制的非对映选择性和对映选择性。