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butyraldehyde
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  丁醛
     Synthesis of Butyraldehyde 1,2-Propanediol Acetal by SO_4~(2-)/TiO_2-WO_3 as Catalyst
     SO_4~(2-)/TiO_2-WO_3催化合成丁醛1,2-丙二醇缩醛
短句来源
     Synthesis of Butyraldehyde Glycol Acetal Catalyzed by SO_4~(2-)/TiO_2-WO_3
     SO_4~(2-)/TiO_2-WO_3催化合成丁醛乙二醇缩醛
短句来源
     CATALYTIC SYNTHESIS OF BUTYRALDEHYDE 1,2-PROPANEDIOL ACETAL BY TiSiW_(12)O_(40)/TiO_2
     TiSiW_(12)O_(40)/TiO_2催化合成丁醛缩1,2-丙二醇
短句来源
     Synthesis of Butyraldehyde Glycol Acetal with SO_(4)~(2-)-La~ (3+ ) /TiO_2 as Catalyst
     稀土固体超强酸SO_(4)~(2-)-La~(3+)/TiO_2催化合成丁醛乙二醇缩醛
短句来源
     Synthesis of Butyraldehyde Glycol Acetal by Using SO_4~(2-)/TiO_2-MoO_3 as Catalyst
     SO_4~(2-)/TiO_2-MoO_3催化合成丁醛乙二醇缩醛的研究
短句来源
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  正丁醛
     Under the condition of the butyraldehyde 50 mL,the oxygen flow 90 mL/min,reaction time 6 h,catalyst 0.6 g,reaction temperature 50 ℃. The yield of butanoic acid was 95.8 %.
     在正丁醛50 mL、氧气流量为90 mL/min、反应时间6 h、催化剂为0.6 g、反应温度50℃的条件下,正丁酸的收率可达95.8%.
短句来源
     The Kinetic Study of Reactions of O(~3p) with Propionaldehyde and Butyraldehyde
     O(~3p)原子与丙醛和正丁醛化学反应动力学研究
短句来源
     The capillary column HP 1(25m×0.32mm i.d. ×1.05μm) has been used to analyze n butyraldehyde.
     采用HP 1毛细管色谱柱 (2 5m× 0 .32mmi.d .× 1.0 5 μm)对正丁醛及其各种组份进行了气相色谱分析方法的研究。
短句来源
     2. As for formaldehyde, acetaldehyde, acetone, butyraldehyde, aldehyde and benzaldehyde which are hydrazone derivatives, the detection limitation ranges from 0.50 ng to 1.91 ng, linear range locates between 0.05 ng and 223 ng, and the correction coefficients are all beyond 0.9990.
     2、对于甲醛、乙醛、丙酮、正丁醛、苯甲醛五种腙的衍生物,其检出限在0.50-1.91 ng。 线性范围在0.50-223 ng。
短句来源
     Preparation of butyric acid by oxidation of butyraldehyde was studied. Optimal operating conditions were experimentally given as follows: temperature: 50~60℃, mole ratio of oxygen to butyraldehyde: 0.750~0.875, mass ratio of catalyst to butyraldehyde: 0.1%~0.2% and the reaction time about 3 hours.
     在反应温度 50~ 60℃ ,氧醛摩尔比 0 .75~ 0 .875,催化剂与正丁醛的质量比 0 .1 %~ 0 .2 % ,反应时间为 3 h左右的优化的工艺条件下进行了正丁醛氧化制正丁酸的研究。
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  “butyraldehyde”译为未确定词的双语例句
     0.2-1.0%(W/V), that is 2-10g/L; the concentration of butyraldehyde is
     (2)壳聚糖合成浓度为0.2~1%(W/V),即2~10g/L时,填料具有较好的应用性。
短句来源
     The obtained optimum conditions were n (butyraldehyde)∶ n (1,2 propanediol)=1∶1.5,catalyst 5 g,water removing agent 13 mL and reaction 1 h.
     确定了最佳工艺条件为 n(醛 )∶ n(二元醇 ) =1∶ 1 .5 ,催化剂 5 g,带水剂 1 3m L,反应时间 1 h。
短句来源
     The optimum condition is that the molar ratio of formaldehyde/butyraldehyde is 2.2∶1,the mass ratio of the catalyst used to the reactants is 1.5%,the reaction time is 4.0h,and the reaction temperature is 30℃. Under these conditions,the yield is up to 54.1%.
     结果表明,在甲醛(mol)∶丙醛(mol)=2.2∶1,催化剂用量为反应物质量的1.5%,反应时间为4h,温度为30℃的条件下二羟甲基丙醛的收率为54.1%
短句来源
     Iso butyraldehyde glycol acetal(1) was synthesized from iso butyraldehyde(2) and glycol(3) in the presence of TiSiW 12 O 40 /TiO 2(4).
     以固载杂多酸盐TiSiW1 2 O40 /TiO2 为多相催化剂 ,通过异丁醛和乙二醇反应合成异丁醛乙二醇缩醛 ,并探讨了诸因素对收率的影响。
短句来源
     The detection limit and CV of this method for butyraldehyde in microsomes were 0 7μmol/L and 8 1% 9 3% respectively. The recovery was 85 3%.
     方法的检测限为0.7μmol/L,变异系数8.1%~9.3%,回收率85.3%。
短句来源
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  butyraldehyde
Turnover frequencies, activation energies and reaction orders for crotonaldehyde, benzaldehyde, phenylacetaldehyde and acetophenone are provided and compared to those for butyraldehyde, benzyl alcohol, 1-phenylethanol, acetylcyclohexane and acetone.
      
Chemiluminescence (CL) is generated in the condensation reaction of aniline with butyraldehyde in DMF to form 3-ethyl-2-propylquinoline.
      
Lanthanide(III) ion as a luminescent and catalytically active reaction center of aniline condensation with butyraldehyde
      
Acetaldehyde and butyraldehyde azines and 1,2-bis(tert-butylimino)ethane add only one molecule of dialkyl H-phosphonate at room temperature to form alkyl (α-aminoalkyl)phosphonates.
      
Transformations of butyraldehyde in the presence of catalysts based on large-pore molecular sieves VPI-5 and AlPO4-8
      
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An attempt was made to synthesize 2,5-diketo-1,2,3,4,5,6,7,8-octahydro-quinazoline (Ⅰ) through the application of a reaction similar to Biginelli condensation. 4-(2'-Chlorophenyl)-2,5-diketo-1,2,3,4,5,6,7,8-octahydro-quinazoline (Ⅰ) (R=2'-Cl'C_6H_4-),changing gradually at 250° from the fine crystals into somewhat larger rectangular crystals and melting at 290-292°, was isolated through the condensation of cyclohexanedione-(1,3 ), o-chlorobenzaldehyde and urea in ethanol in presence of acid.Nevertheless, the...

An attempt was made to synthesize 2,5-diketo-1,2,3,4,5,6,7,8-octahydro-quinazoline (Ⅰ) through the application of a reaction similar to Biginelli condensation. 4-(2'-Chlorophenyl)-2,5-diketo-1,2,3,4,5,6,7,8-octahydro-quinazoline (Ⅰ) (R=2'-Cl'C_6H_4-),changing gradually at 250° from the fine crystals into somewhat larger rectangular crystals and melting at 290-292°, was isolated through the condensation of cyclohexanedione-(1,3 ), o-chlorobenzaldehyde and urea in ethanol in presence of acid.Nevertheless, the use of n-butyraldehyde, p-methoxy-benzaldehyde or p-dimethyl-amino-benzaldehyde instead of o-chloro-benzaldehyde in the above mentioned reaction gave 1,8-diketo-1,2,3,4,5,6,7,8-octahydro-xanthene derivatiws (Ⅱ), urea being not involved in the reaction. The melting points of various 9-R-1,8-diketo-1,2,3,4,5,6,7,8-octahydro-xanthene were as follows:Compound Ⅱ with R= m.p.n-propyl 118-119°p-Methoxy-phenyl 191°p-Dimethylaminophenyl 215-216°resolidifying at this m. p., changing, in crystal form from needles into fine, long hair-like crystals, remelting at 220-221°.9-n-Propyl-1,8-diketo-1,2,3,4,5,6,7,8-octahydro-xanthene was identified as follows: n-Propyl-bis-(2,6-diketo-cyclohexyl)-methane (Ⅲ), m.p. 94-96°, was first prepared by condensing cyclohexanedione (1,3) with n-bmyraldehyde in ethanol in presence of piperidine. This compound (Ⅲ) was heated with ethanol-hydrochloric acid, and was then converted into 9-n-propyl-1,8-dikcto-1,2,3,4,5,6,7,8-octahydro-xanthene, m.p. 119-120°, which was proved to be identical with the compound isolated from the condensation of n-butyraldehyde, urea and cyclohexanedione (1,3) in ethanol in presence of acid.

環己烷二酮(1,3),隣氯代苯甲醛及尿素在乙醇-鹽酸中按照Biginelli式縮合反應生成4-(2′-氯代苯基)-2,5-二酮-1,2,3,4,5,6,7,8-八氫化-1,3-二雜氮萘。於上述反應中用正丁醛,对甲氧基苯甲醛或对二甲氨基苯甲醛代替隣氯代苯甲醛,作者未析出2,5-二酮-1,2,3,4,5,6,7,8-八氫化-1,3-二杂氮萘,而得到1,8-二酮-1,2,3,4,5,6,7,8,9,10-十氫化-10-杂氧蒽衍生物,所用尿素並未參加反應。

A gas chromatographic method, which utilizes a glycerol column connected in series with a silicone oil column, has been developed for the analysis of liquid phase byproducts in butadiene synthesis from ethanol. Ethanol and water, the main components, are separated from the other components by back-flushing through the glycerol column. Further resolution of the components free from water and ethanol is carried out on silicone oil column. By means of the functional group colour reaction, treated the vapour sample...

A gas chromatographic method, which utilizes a glycerol column connected in series with a silicone oil column, has been developed for the analysis of liquid phase byproducts in butadiene synthesis from ethanol. Ethanol and water, the main components, are separated from the other components by back-flushing through the glycerol column. Further resolution of the components free from water and ethanol is carried out on silicone oil column. By means of the functional group colour reaction, treated the vapour sample with chemical reagents in syringe, and the addition of supposed constituents, six compounds, i.e., acetaldehyde, ethyl ether, acetone, valeraldehyde, butyraldehyde, and ethyl acetate have been identified, and the former four constituents are quantitatively estimated by the absolute peak height method.

进行了用甘油柱和硅油柱串联以分离乙醇合成丁二烯液相产物中的副产物的研究.首先在甘油柱中将样品内大量乙醇和水同其他组分分离,井用反吹法将乙醇和水冲出柱外,其他组分进入硅油柱进一步被分离.通过颜色反应、化学处理和假设组分三种方法,鉴定出副产物中含有乙醛、乙醚、丙酮、戊醛、丁醛和乙酸乙酯等化合物;对前四种物质还进行了定量分析.

The compound, α-keto-β-ethoxybutyraldehyde bisthiosemicarbazone (Ⅰ), reported in our previous paper showed marked carcinostatic activity against several animal tumors and has been used in clinical trial. Because of its poor water solubility and absorption from the gestrointestinal tract, twenty-nine compounds related to (Ⅰ) have been prepared by direct condensation of the appropriate α-ketoaldehyde (Ⅱ, R-CH_3, C_2H_5, n-C_3H_7, n-C_4H_9) with different amino compounds in order to search for antitumor and antiviral...

The compound, α-keto-β-ethoxybutyraldehyde bisthiosemicarbazone (Ⅰ), reported in our previous paper showed marked carcinostatic activity against several animal tumors and has been used in clinical trial. Because of its poor water solubility and absorption from the gestrointestinal tract, twenty-nine compounds related to (Ⅰ) have been prepared by direct condensation of the appropriate α-ketoaldehyde (Ⅱ, R-CH_3, C_2H_5, n-C_3H_7, n-C_4H_9) with different amino compounds in order to search for antitumor and antiviral agents with lower toxicity and better water solubility as well as to explore structureactivity relationship. The compounds prepared are listed in table Ⅰ.The screening data showed that the antitumor activity of the condensation products of α-keto-β-alkoxy-butyraldehyde varied with different amino moieties. The α-keto-β-alkoxy-butyraldehyde bis-thiosemicarbazones (1-3) showed the highest inhibitory action, while substitutions in the N~4 position either reduced (N~4-methyl 4,5) or abolished (Naryl, 6-9, N-p-bromophenyl, 10-11) the activity. Replacement of the sulphur atom in the thiosemicarbazone with oxygen (13-16), imino group (17) or methylthio group (18-19) also decreased the efficacy. Compound (12) inhibited the growth of chlamydozoa trachomatis at a minimun concentration of 5μg/ml. None of the compounds exhibited any activity against influenza virus (PR-8 strain).

本文报告了β-甲氧-,β-乙氧-β-正丙氧-,β-正丁氧-α-正丁酮醛与N~4-取代氨硫脲,S-甲基氨硫脲,氨脲,氨胍,苯肼,异烟肼以及对氨基苯甲酸缩合物共29个化合物的合成,以寻找抗肿瘤及抗病毒药物。

 
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