1)decarboxylation[英][,di:kɑ:,b?ks?'lei??n][美][,dikɑr,bɑks?'le??n]脱羧
1.Synthetic methods of α, β-unsaturated ketones by decarboxylation of β-keto carboxylates in the presence of palladium complex catalyst were introduced.介绍了以钯为催化剂,β-酮酸丙烯基酯脱羧制备α,β-不饱和酮的方法,并对溶剂、配体的选择性,反应机理及其应用进行了简单综述。
2.(S)-1-(1-Phenylethyl)-4-piperidone(Ⅰ) was prepared from (S)-1-phenylethylamine and methyl acrylate through Michael addition,Dieckmann cyclization and decarboxylation.该文以(S)-1-苯乙胺、丙烯酸甲酯为原料,经Michael加成,Dieckmann环合,脱羧,合成了(S)-1-(1-苯基乙基)-4-哌啶酮。
3.1-Methyl-4-piperidone was obtained from a methanol solution of methylamine and methyl acrylate through Michael addition,Dieckmann cyclization and decarboxylation.以甲胺的甲醇溶液和丙烯酸甲酯为原料,经Michael加成、Dieckmann环合和脱羧反应合成得到了1-甲基-4-哌啶酮,并对各步反应的工艺参数进行了优化,在n(丙烯酸甲酯)/n(甲胺)=2。
英文短句/例句
1.ornithine decarboxylase鸟氨酸脱羧酶 鸟氨酸脱羧酶
2.Any of various enzymes that hydrolize the carboxyl radical.脱羧酶酶的一种,可水解羧基酸
3.One exception is the decarboxylation of aromatic carboxylic acids.芳香羧酸进行脱羧反应是一个例外。
4.dialkylglycine decarboxylase二烷基甘氨酸脱羧酶
5.amine precursor uptake and decarboxylation system胺前体摄取及脱羧系统
6.pantothenylcysteine decarboxylase泛酰半胱氨酸脱羧酶
7.An enzyme that catalyzes a carboxylation or decarboxylation reaction.羧(化)酶,羧基酶在羧化或脱羧反应中起催化作用的一种酶
8.This decarboxylation is catalysed by the enzyme glutamic acid decarboxylase.这个脱羧作用是由谷氨酸脱羧酶催化的。
9.Removal of a carboxyl group from a chemical compound, usually with hydrogen replacing it.脱羧作用从一化合物中脱去羧基,通常是用氢来替换
10.It was originally obtained by decarboxylation of benzoic acid.它最先是由苯甲酸脱羧而得到的。
11.Cloning and Expression of α-Acetolactate Decarboxylase;α-乙酰乳酸脱羧酶基因的克隆表达
12.Research on Raman Spectra of Benzoic Acid during Decarboxylic Process苯甲酸脱羧反应过程的拉曼光谱研究
13.Magnetite Nanoparticles Prepared by Thermal Decarboxylation and Decomposition of Iron Hydroxide Alkylsulfonyl Acetate烷基羧甲砜基氢氧化铁热脱羧和热分解法制备纳米氧化铁(英文)
14.Expression and Chinicopathological Significance of Ornithine Decarboxylase and Glutamate Decarboxylase 65 in Benign and Malignant Lesions of Rhinosinus鸟氨酸脱羧酶和谷氨酸脱羧酶65在鼻腔鼻窦良恶性病变中的表达及意义
15.Significance of glutamic acid decarboxylase in islet cell antibody assay谷氨酸脱羧酶在胰岛细胞抗体检测中的意义
16.Cloning and expression of α-acetolactate decarboxylase gene from Acetobacter racens醋酸杆菌α-乙酰乳酸脱羧酶基因的克隆表达
17.Prevention of Type 1 Diabetes with DNA Vaccine Encoding Glutamic Acid Decarboxylase;谷氨酸脱羧酶DNA疫苗预防糖尿病的实验研究
18.Study on Production of β-Alanine by L-Aspartate-α-Decarboxylase;L-天冬氨酸α-脱羧酶生产β-丙氨酸的研究
相关短句/例句
decarboxylase[英][,di:kɑ:'b?ks?leis][美][,dikɑr'bɑks?,les, -,lez]脱羧酶
1.In Chlamydia pneumoniae AR39,it was shaved that a conserved protein NP__444977 had similar effect to 4-hydroxybenzoate decarboxylases through BLAST analysis.来源于肺炎衣原体AR 39的蛋白质NP_444977其功能未知,但BLA ST分析表明此蛋白质可能具有4-羟基苯甲酸脱羧酶的活性。
2.1009 decarboxylase.1009)中的赖氨酸脱羧酶对其进行生物转化,可制备D-鸟氨酸盐酸盐,收率为45。
3)carbonization-decarboxylation碳化脱羧
1.Adopting carbonization-decarboxylation and sulfuric acid absorption technology,nicotine can be extracted from tobacco of inferior quality.在密闭容器中,控制温度540~550℃,使低、次烟叶碳化脱羧。
4)decarboxylation[英][,di:kɑ:,b?ks?'lei??n][美][,dikɑr,bɑks?'le??n]脱羧反应
1.Study on the Decarboxylation of 2-Keto-gluconic Acid;2-酮基-D-葡萄糖酸加热脱羧反应的研究
2.In this thesis,the author first pointed out the cause m which decarboxylation can happen and then Sammarized the Mechamsms of i-onic reaction and free redical reaction.首先指出脱羧反应发生的原因,继而论述其反应的历程——离子型反应和游离基反应历程。
5)decarboxylation percentage脱羧率
1.The results show that the decarboxylation percentage of Liaohe ro.结果表明 ,对于辽河生油岩样 ,Na2 SO4 作用下的十八烷酸的矿物催化脱羧率最高 ,其次为KCl,NaCl,MgCl2 。
6)decarboxylation[英][,di:kɑ:,b?ks?'lei??n][美][,dikɑr,bɑks?'le??n]脱羧作用
1.The hydrothermal reaction of 4,4′-bipyridine-2,2′,6,6′-tetracaboxylic acid(H4L) with MnCl2·4H2O and NH4VO3 gave an unexpected monocuclear vanadium complex [VO2(H2L′)·H2O],in which a new ligand of 4,4′-bipyridine-2,6-diacaboxylic acid(H2L′) was formed from the decarboxylation of H4L.H2O],其中配体(H4L)发生脱羧作用生成新配体4,4′-联吡啶-2,6-二羧酸(H2L′)。
延伸阅读
双脱羧作用分子式:CAS号:性质:含有两个羧基的有机化合物脱掉两个羧基的反应。例如:二取代的丙二酸在四醋酸铅的作用下可发生双脱羧反应生成相应的酮:(CH3CH2CH2·CH2)2C(COOH)2 (CH3CH2CH2CH2)C=O。α-羟基二羧酸在硝酸铈铵的作用下可发生双脱羧反应生成羧酸,这个反应,都属于氧化双脱羧作用,前者脱掉两个羧基氧化成酮,后者脱掉两个羧基同时羟基又氧化为羧基。二羧基消除也属于双脱羧作用。
