Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.
以间硝,乙酰乙酸乙酯,氨化试剂为原料。
Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.
以间硝,乙酰乙酸乙酯,氨化试剂为原料。
Fluoroaniline is synthesized in two steps from p-nitrochlorobenzene and active potassium fluoride.
以对氯硝和活性氟化钾等为原料,经二步法合成了对氟
胺。
Objective:To determine the pesticide hexachlorocyclohexane(BHC),dich lorodiphenyl trichloroethane(DDT)and pentachloronitrobenzene(PCNB)contents in home-planted Hedyotis diffusa Willd.
检测家种白花蛇舌草中六六六(BHC)、滴滴涕(DDT)、五氯硝(PCNB)的残留量。
The fluorization product of 2,4 dichloronitrobenzene was successfully analyzed by gas chromatography on OV 17 packed column.
以OV-17为固定液,采用填充柱气相色谱法,对2,4-二氯硝的氟代产物进行了成功的分离和分析。
METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.
方法以对硝酰氯为起始原料,经缩合、还原、重氮化、偶合、成盐等
制得巴柳氮二钠。
By the deoxidization of zero-valent iron,nitrobenzene,an organic compound hard to be biodegraded,can be deoxidized to nitrosobenzene,and further to aniline,which is easily biodegraded.
利用零价铁的还原性质,将难生物降解的有机物硝先还原生成亚硝
,然后再进一步还原成可生物降解的
胺。
The sythesis of Monuron herbicide by oxidative-reductive carbonylation of dimethyamine and p-ClC6H4NO2 using selenium as catalyst and organic base as cocatalyst was studied.
研究了以硒为催化剂,有机胺为助催化剂,对氯硝和二
胺为
物,经高选择性氧化还原羰
化一步合成灭草隆除草剂。
On the basis of mechanism analysis and compare of CODCr degradation rate, parachlorophenol and aniline were found to be easier degraded by ferrate than nitrobenzene.
由机理分析和宏观CODCr降解率难易程度比较可知高铁酸根与对氯酚、
胺的
比与硝
的
更加容易进行。
Aqueous titanium trichloride promoted intermolecular reductive cyclization of 1,2 -diketone and o-nitroaniline in basic media provides a convenient method for the synthesis of quinoxaline derivatives.
本文研究了三氯化钛水溶液作用下,邻硝胺与1,2-二酮在碱性介质中分子间的成环
,提供了一个方便地合成取代喹喔啉类化合物的方法。
Nitro 1,2,4 triazole 5 one(NTO)can be obtained by nitrating 1,2,4 triazole 3 one (TO) under different conditions,and nitrobenzyl derivatives of TO are prepared as well.
研究了1,2,4三唑酮3(TO)衍生物的合成,结果表明TO在多种硝化条件下均可制得3硝1,2,4三唑酮5(NTO),同时还合成了TO的二取代硝
衍生物。
The article is about how to use phosgene and p-nitrophenylamine to react in acetic ether's liquefier to produce p-nitro-phenyl isocyanate, Its best technological condition have been discussed.
介绍用光气和对硝胺在乙酸乙酯溶剂中
来制备对硝
异氰酸
酯的方法,并讨论了其最佳工艺条件。
The standard deviations were 0.06 and 0.14 for Phoxim and Quintozene repectively,while the coefficients of variation were 1.14% and 1.34%.The average recoveries were 99.5 and 99.2% separately.
辛硫磷和五氯硝标准偏差分别为0.06和0.14,变异系数分别为1.14%和1.34%,平均回收率分别为99.5%和99.2%。
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