查询词典 cyclopentanone

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich condensation, amine exchange and selective reduction. Xylene-induced mice ear edema assay was used to evaluate their anti-inflammatory activity.

以环戊酮为起始原料，通过Stork烯胺反应、Mannich缩合反应、胺交换反应和选择性还原制备目标化合物；以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich condensation , amine exchange and selective reduction. Xylene-induced mice ear edema assay was used to evaluate their anti-inflammatory activity.

以环戊酮为起始原料，通过Stork烯胺反应、Mannich缩合反应、胺交换反应和选择性还原制备目标化合物；并以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

The types and kinds of medical intermediate compounds thiaphenol series, pyridine series, cyclopentanone derivant etc.

医药中间体（噻酚系列、吡啶系列、环戊酮衍生物等）品种多样，产品质量保证，深受广大客户好评。

Dihydro-5H-cyclopentanopyridine, a key intermediate of Cefpirome, was synthesized from cyclopentanone and propargylamine under autoclave prompted by copper chloride.

以环戊酮和丙炔胺为原料，在高压釜中用氯化亚铜催化合成头孢匹罗关键中间体6，7-二氢-5H-环戊烷并吡啶。

The related reaction conditions and factors such as catalysis of some catalysts etc were discussed. In the procedures, 2-pentylidene cyclopentanone intermediate, which could be isomerizated into a 2-pentyl cyclopentenone under acidic conditions, was effectively prepared in the presence of a phase transfer promotor.

讨论了正戊醛和环戊酮在碱性条件下缩合生成2-亚戊基环戊酮的反应温度、碱浓度、相转移催化剂等因素对反应的影响。2-亚戊基环戊酮中间体化合物能在酸催化剂作用下，异构成2-戊基环戊烯酮，其中酸浓度和溶剂等参数对反应影响明显。

In the second part of the thesis, we discussed a L-proline-catalyzed direct Aldol reaction between L-amino acid-derived N,N-dibenzyl -amino aldehydes 15 and acetone, cyclopentanone or hydroxyacetone, which afforded (-amino--hydroxy- or (-amino-,(-dihydroxy-ketones in good to excellent yields (up to 94%) and diastereoseletivities (up to 94.9%).

发现许多情况下，反应的产率和de值超过90%。接着，在碱性条件下，我们将L-亮氨酸衍生的N，N-二苄基--氨基醛15g与羟基丙酮反应得到的主要产物(，-二羟基-γ-氨基酮171d与次溴酸钠反应，得到了具有抗肿瘤活性的天然产物PM-94128的氨基酸片断184。

Cyclopentene ; oxidation ; cyclopentanone ; palladium acetate ; iron phthalocyanine

环戊烯；氧化；环戊酮；醋酸钯；酞菁铁

Synthesis of Antidote of N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane BI Hong-mei, ZHANG Jin-yan, LIANG Ying, SHEN Yong (College of Arts and Sciences Heilongjiang August First Reclamation University, Daqing 163319, Heilongjiang, China) Abstract: N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane was synthesized by one pot method with isopropanolamine, cyclopentanone and dichloroacetyl chloride. The optimum reaction conditions obtained are as follows:the proportion in moles of the above materials is 1∶1∶1.2, reaction solvent is toluene, reaction temperature is -15 to -10 ℃,reaction time is 3 h, under the optimum condition, the yield of the compound is 50.0%.

除草剂解毒剂N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷的合成毕洪梅，张金艳，梁英，沈勇(黑龙江八一农垦大学文理学院，黑龙江大庆 163319)摘要：以33%的氢氧化钠水溶液为缚酸剂，异丙醇胺、环戊酮和二氯乙酰氯为原料，采用&一锅法&合成了N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷，采用正交实验法得到最佳反应条件：反应原料摩尔比为1∶1∶1.2，苯作溶剂，反应的温度为-15 ℃~-10 ℃，搅拌时间为3 h，产率达到50.0%。

Starain LHG1 could not only utilize the intermediate products of cycloalkanes－clohexanone and cyclopentanone, but also could degrade alkane, aromatic hydrocarbon and phenols, such as liquid paraffin,solid paraffin, naphthalene and phenol.

LHG1菌株能够利用环烷烃代谢的中间产物环己酮和环戊酮。此外，LHG1菌株还能降解液体石蜡、固体石蜡、萘和苯酚等链烃、芳香烃和酚类。

The main compositions of LP are shorter chain carboxylic acid and their ethyl esters, furan derivatives, cyclopentanone, phenol derivatives, benzene derivatives, aromatic ketone, aromatic acid derivatives, longer chain carboxylic ethyl esters and sterides. After upgrading, the main indexes reach the standard of fuel oil.

结果表明，LP的主要成分包括短链或环状脂肪酸及其酯、呋喃衍生物、环戊烯衍生物、苯酚衍生物、苯衍生物、芳酮、芳酸及其乙酯、长链脂肪酸乙酯和甾族化合物，经提质其主要指标达到了燃料油的标准。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失