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heterocycle
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  杂环
     [m.p. 216.9℃~217.1℃,yield 57.5 %. IR,ν max (cm -1):3111(aromatic heterocycle C-H),3060(Ar-H),1597,1558,1541,1508,1474,1443(Benzene ring skeleton, the vibration of sthiazole ring skeleton),939,742,692(Benzene ring single substitution)].
     2 1 6.9℃~ 2 1 7.1℃ ,收率 5 7.5 % . IR,νmax( cm- 1 ) :31 1 1 (芳杂环 C- H) ,30 60(芳氢 ) ,1 5 97,1 5 5 8,1 5 4 1 ,1 5 0 8,1 474,1 44 3(苯环骨架 ,噻唑环骨架振动 ) ,939,742 ,692 (苯环单取代 ) .
短句来源
     A novel pyrazolone derivate (PMCP-MTSC) containing NNS hexa-atomic heterocycle was obtained by the reaction of 1-phenyl-3-methyl-4-chloroacetyl-pyrazolone-5 with 4-methyl thiosemicarbazine.
     通过1-苯基-3-甲基-4-氯乙酰基-吡唑啉酮-5 (PMCP) 和4-甲基氨基硫脲 (MTSC) 缩合, 形成了一种新的双杂环化合物 (PMCP-MTSC)。
短句来源
     Target compounds (Ⅰ、Ⅱ、Ⅲ) are synthesized by nucleophilic addition of amino heterocycle with acyl isothiocyanates in anhydrous and aprotonic solvent.
     利用酰基异硫氰酸酯与氨基杂环在无水非质子溶剂中发生亲核加成反应,合成三个系列的目标化合物(Ⅰ、Ⅱ、Ⅲ)。
短句来源
     In order to find high active pesticide containing heterocycle, twenty-six novel aroyl thioureas have been synthesized by the reaction of 2-amino-5-[1-o(p)-chlorophenoxyethyl]-1,3,4-thiodiazole with aroyl isothiocyanates.
     为了寻找高活性的杂环农药,通过2-氨基-5-(1-邻氯苯氧乙基)-1,3,4-噻二唑和2-氨基-5-(1-对氯苯氧乙基)-1,3,4-噻二唑与芳酰基异硫氰酸酯反应,合成了26种新的芳酰基硫脲.
短句来源
     Synthesis and biological activity of α-chloroacetyl ureas containing heterocycle
     含杂环基的α-氯乙酰基脲的合成与生物活性
短句来源
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  “heterocycle”译为未确定词的双语例句
     The phenyl ring (C(1)~C(6), the heterocycle (N(1), C(1)~C(9)) and imidazole are coplanar. The dihedral angle between this plane and the phenyl plane (C(12)~C(17) is 10.014?
     在分子结构中, 苯环(C(1)C(6))与环(N(1), C(1)C(9))以及咪唑环共平面, 该平面与苯环(C(12)C(17)所在平面的夹角为10.014。
短句来源
     Studies on Acylthiosemicarbazides and Related Heterocycle (XXIII)──Synthesis and Bactericidal Activity of 5-(5-(3-pyridyl)-2H-tetrazole-2-ylmethyl)-2-arylamino-1, 3, 4-oxadia- zoles
     Studies on Acylthiosemicarbazides and Related Heterocycle(XXIII)──Synthesis and Bactericidal Activity of 5-(5-(3-pyridyl)-2H-tetrazole-2-ylmethyl)-2-arylamino-1,3,4-oxadia-zoles
短句来源
     A novel aromatic diamine 2-(4-aminophenyl)-4-(3-methyl-4-aminophenoxy)-2,3-phthalazinone-1(1, DAMPP) containing aza heterocycle was synthesized in a higher yield starting from 4-(3-methyl-4-hydroxyphenyl)-2,3-phthalazinone-1(OM-HPPZ) via two steps conveniently.
     合成了一种新型芳香二胺双 -( 4 -氨基苯基 ) -4 -( 3-甲基 -4 -苯氧基 ) -2 ,3-二氮杂萘 -1 -酮 ( 1 ) [2 -( 4 -aminophenyl) -4 -( 3-methyl-4 -phenoxy) -2 ,3-phthalazinone-1 ,DAMPP].
短句来源
     Corrosion inhibitor 9912\|1, a quaternary ammonium salt containing nitrogen heterocycle, was synthesized for inhibiting corrosion of CO\-2. Its inhibition performances were investigated for carbon steel in saturated CO\-2\|3%NaCl\|H\-2O at 25 ℃ and 90 ℃ by means of electrochemistry.
     为控制CO2腐蚀,合成了含氮杂环季铵盐缓蚀剂9912 1,通过电化学实验,研究了该缓蚀剂在CO2 3%NaCl H2O体系中对碳钢于25℃和90℃下的缓蚀行为。
短句来源
     Synthesis and Antibacterial Activity of (S)-5-(Heterocycle Methylene) -3-(3-Fluoro-4-morpholin-4-yl-phenyl)-Oxazolidin-2-one Derivatives
     (S)-5-(氮杂环亚甲基)-3-(3-氟-4-吗啉-4-基-苯基)噁唑烷-2-酮衍生物的合成及抗菌活性(英文)
短句来源
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  相似匹配句对
     ANTIARRHYTHMIC EFFECTS OF IODIUM-HETEROCYCLE COMPOUNDS
     碘杂环化合物的抗心律失常作用
短句来源
     Heterocycle is always pyrimidine or triazine.
     其中杂环部分常为嘧啶环或均三嗪环。
短句来源
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  heterocycle
and root-knot nematode, Meloidogyne incognita Kofoid et White, that a steroid molecule exhibits significant nematicidal activity if it contains a carbohydrate moiety and an additional heterocycle in the steroid core.
      
Photolysis of MTHF included opening of the imidazoline ring, dehydrogenation of the tetrahydropterin heterocycle, and elimination of the p-aminobenzoylglutamate moiety.
      
6,7-Dimethyltetrahydropterin was used as a model compound to show that protonation of the reduced pterin heterocycle increased its resistance to oxidation, and UV irradiation did not accelerate this process.
      
The effect of the structure of the nitrogen-containing heterocycle on reversible anticholinesterase effect of heterocyclic thion
      
It was shown that τfl was determined by the solvent nature and weakly depended on substituents on the DHQ aromatic ring and heterocycle, with τfl being substantially lower in methanol than in the other solvents.
      
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A new iodine heterocycle, 3,6-dinitro-dibenzopyriodonium bisulfate (Ⅲa), prisms, m.p. 217.5° (dec.), was found to be readily prepared in 86% yield by treating 4,4'-dinitrodiphenylmethane with iodosyl sulfate, which was conveniently obtained by stirring a stoichiometric mixture of iodine and sodium iodate in concentrated sulfuric acid. The iodonium compound (Ⅲa) could be converted to the chloride (Ⅲb), colorless needles, m.p. 211.5° (dec), bromide (Ⅲc), yellowish needles. m.p. 217.5° (dec.), iodide (Ⅲd),...

A new iodine heterocycle, 3,6-dinitro-dibenzopyriodonium bisulfate (Ⅲa), prisms, m.p. 217.5° (dec.), was found to be readily prepared in 86% yield by treating 4,4'-dinitrodiphenylmethane with iodosyl sulfate, which was conveniently obtained by stirring a stoichiometric mixture of iodine and sodium iodate in concentrated sulfuric acid. The iodonium compound (Ⅲa) could be converted to the chloride (Ⅲb), colorless needles, m.p. 211.5° (dec), bromide (Ⅲc), yellowish needles. m.p. 217.5° (dec.), iodide (Ⅲd), yellow powder, m.p. 164° (dec.) and picrate (Ⅲe), yellow needles, m.p. 183-184° (dec.) by treating its solution in formic acid with a 50% formic acid solution of sodium chloride, sodium bromide or potassium iodide or with an alcoholic solution of picric acid respectively. The structural formula (Ⅲ) of the new iodonium compounds was derived by means of potassium permanganate oxidation of the bisulfate (Ⅲa) to 2-iodo-4-nitrobenzoic acid, and by thermal decomposition of the iodide (Ⅲd) to 2,2'-diiodo-4, 4'-dinitro-diphenyl-methane (Ⅵ) (60% yield), m.p. 158-159°, the structure of which was shown by analysis and by comparison with what is known about the behavior of other iodonium iodides, e.g., 4,4'-dicarboethoxy-diphenylene iodonium iodide (Ⅷ), which decomposes on heating yielding 2,2'-diiodo-4,4'-dicarboethoxydiphenyl (Ⅸ). Compound (Ⅵ) could be reduced with tin and hydrochloric acid to a diamino compound (Ⅶ).The iodonium salt (Ⅲa) possessed the interesting property that when it was treated with dilute sodium hydroxide solution at room temperature with the addition of ethyl acetate or pyridine, a beautiful bluish-green color gradually developed in the organic layer. When it was heated with dry pyridine, the same color developed. The colored ethyl acetate solution changed to brownish yellow on acidification with dilute sulfuric acid and regained its bluish-green color when the acidified solution was made alkaline.Under similar conditions as described above, reaction between diphenylmethane and iodosyl sulfate gave a grayish substance, m.p. 210-212°, which was insoluble in common solvents. This substance was possibly a polymeric compound of formula (Ⅺ).

1.4,4'-二硝基二苯甲烷(Ⅰ)與硫酸亚碘醯(Ⅱ)作用,生成一种新型的含碘杂環化合物(Ⅲ_a)。 2.化合物Ⅲ_a與氯化鈉、溴化鈉、碘化鉀或苦味酸作用,置换成为相應的鹵化物(Ⅲ_(b-d))或苦味酸盐(Ⅲ_e)。 3.用鹼性高錳酸鉀溶液氧化化合物Ⅲ_a得2-碘代-4-硝基苯甲酸。 4.碘化物(Ⅲ_d)在它的熔點温度进行熱解,得2,2'-二碘代-4,4'-二硝基二苯甲烷。继还原,得相應的二氨基化合物。二者均为新化合物。 5.化合物Ⅲ_a用氢氧化鈉溶液处理,得到蓝绿色物質,溶於乙酸乙酯、丙酮、吡啶中成鲜明的蓝绿色溶液。乙酸乙酯溶液酸化後变成黄棕色,再鹼化復现蓝绿色。将化合物Ⅲ_a在无水吡啶中加熱,亦呈现蓝绿色。 6.在类似的条件下,二苯甲烷與硫酸亚碘醯起作用。

Reaction between 4, 4'- di-[dimethylamino]-diphenylmethane (Ⅰ) and iodosyl sulfate (Ⅱ) in concentrated sulfuric acid solution gave an iodine heterocycle, 3, 6-di-[dimethylamino]-dibenzopyriodonium iodide dihydriodide(Ⅲ_a·2HI), m.p. 179—181° (decomp.), with a yield of 77%. The free iodide (Ⅲ_a), m.p. 195.5° (decomp.), was obtained, when the dihydriodide (Ⅲ_a·2HI) was treated with dilute sodium hydroxide solution and chloroform. The thermal decomposition of the iodide (Ⅲ_a) at its melting point yielded 2,...

Reaction between 4, 4'- di-[dimethylamino]-diphenylmethane (Ⅰ) and iodosyl sulfate (Ⅱ) in concentrated sulfuric acid solution gave an iodine heterocycle, 3, 6-di-[dimethylamino]-dibenzopyriodonium iodide dihydriodide(Ⅲ_a·2HI), m.p. 179—181° (decomp.), with a yield of 77%. The free iodide (Ⅲ_a), m.p. 195.5° (decomp.), was obtained, when the dihydriodide (Ⅲ_a·2HI) was treated with dilute sodium hydroxide solution and chloroform. The thermal decomposition of the iodide (Ⅲ_a) at its melting point yielded 2, 2'-diiodo-4, 4'-di-[dimethylamino]-diphenylmethane, m. p. 124°, picture, m. p. 153.5—154.5°. The iodide (Ⅲ_a) could be converted to the formate (Ⅲ_a), m.p. 136.5° (decomp.), by treating its solution in formic acid with silver oxide. The formate (Ⅲ_a) was found to be readily converted to other salts, when its saturated alcoholic solution was reacted with corresponding acids [excepting for thiocyanate (Ⅲ_a), potassium thiocyanate was used] or phenolic compounds, respectively. The melting points (with decomposition) of these salts are as follows: Bromide (Ⅲ_b), 197.5°; chloride (Ⅲ_c), 197.5°; thiocyanate (Ⅲ_e), 153.5—155°; picrate (Ⅲ_f), 152—153°; benzoate (Ⅲ_g), 144°; o-nitrobenzoate (Ⅲ_h), 128—130.5°; cinnamate (Ⅲ_i), 117.5°; oxalate (Ⅲ_j), 159°; malonate (Ⅲ_k), 130°; maleate (Ⅲ_l), 160°; fumarate (Ⅲ_m), 171—171.5°; tartate (Ⅲ_n), 153.5—154°; malate (Ⅲ_o), 156.5°; p-cresolate (Ⅲ_p), 130°; p-chlorophenolate (Ⅲ_q), 129°; α-naphtholate (Ⅲ_r), 128.5—129°; o-nitrophenolate (Ⅲ_s), 138.5°; m-nitrophenolate (Ⅲ_t), 129.5—130°, p-nitrophenolate (Ⅲ_u), 124°; 2, 4-dinitrophenolate (Ⅲ_v), 145°; pyrocatecholate (Ⅲ_w), 121.5°; resorcinolate (Ⅲ_x), 143°; hydroquinolate (Ⅲ_y), 121.5°; pyrogallolate (Ⅲ_z), 140.5°. These salts were soluble in methanol, ethanol, chloroform or pyridine with different solubilities, and those sults, which contain organic anionic halves, were easily dissociated by treating their solutions in chloro- form with aqueous sodium chloride or dilute hydrochloric acid, and then the acids or phenols originally used could be recovered.The UV spectrum of the chloride (Ⅲ_c) shown in figure 1 possessed two maxima, i. e.,λ_(max) 265 (266) mμ, logε 4.51, and λ_(max). 313 mμ, logε 3.73, and seemed to be analogously related to that of 4, 4'-di-[dimethylamino]-diphenylmethane (Ⅰ), which had been reported by V. V. Perekalin et al. (1952).It was found that a solution of 10 γ/ml of the formate (Ⅲ_d) in water would inhibit the growth of B. Subtihs (Oxford Cup Test) with an inhibition diameter of 11.6 mm and 13 mm, while under the same conditions streptomycin would produce the same effect with only a concentration of 1 γ/ml.

(一)以4,4′-二-[二甲氨基]-二苯甲烷(Ⅰ)、硫酸亞碘酰(Ⅱ)及碘化鉀制成3,6-二-[二甲氨基]-二苯并碘六圜碘化物二氫碘酸鹽(Ⅲ_a·2HI),产率77%。 (二)碘化物二氫碘酸鹽(Ⅲ_a·2HI)以稀氫氧化鈉与三氯甲烷处理,得到碘化物(Ⅲ_a)。Ⅲ_a在其熔点温度热解,得到已知化合物——2,2′-二碘代-4,4′-二-[二甲氨基]-二苯甲烷(Ⅳ);并制备Ⅳ的苦味酸衍生物。 (三)碘化物(Ⅲ_a)的甲酸溶液以氧化銀处理,濾液經减压濃縮后,得到甲酸鹽(Ⅲ_d)。 (四)甲酸鹽(Ⅲ_d)的饱和乙醇溶液分别与若干种無机酸、鹽、有机酸及酚类化合物等作用,均得到相应的置換产物(Ⅲ)。所得到的有机酸鹽与酚鹽在温和的条件下,容易解离,而收回原用的有机酸或酚类化合物。甲酸鹽对枯草杆菌有抑制作用。 (五)氯化物(Ⅲ_c)的紫外吸收光譜(如圖1曲綫1),显示有兩个吸收峰。与4,4′-二-[二甲氨基]-二苯甲烷(Ⅰ)者相近似。

The results calculated by perturbational molecular orbital (PMO), Huckel molecular orbital (HMO) and self-consistent field molecular orbital (PPP) methods are very similar in various aspects for the alternative hydrocarbons. A linear correlation exists between the ionization constant (pK_α) and the charge density of active atom (q_x) or the difference of conjugative energies between conjugative acid-base pair (ΔEπ). However, the pK_α values of aromatic carboxylic acids and nitrogen-containing heterocycle...

The results calculated by perturbational molecular orbital (PMO), Huckel molecular orbital (HMO) and self-consistent field molecular orbital (PPP) methods are very similar in various aspects for the alternative hydrocarbons. A linear correlation exists between the ionization constant (pK_α) and the charge density of active atom (q_x) or the difference of conjugative energies between conjugative acid-base pair (ΔEπ). However, the pK_α values of aromatic carboxylic acids and nitrogen-containing heterocycle are inversely proportional to q_x or ΔEπ. It shows that in the fomer case the pK_α value is governed chiefly by the dipole moment while in the latter case the pK_α value is controlled by the repulsion integral between the lone electron pair in nitrogen atom and the electrons in the highest occupied molecular orbital.

本文用微扰分子轨道(PMO),Hackel分子轨道(HMO)和自洽场分子轨道(PPP)方法研究了芳香酮、芳香胺、酚和含氮杂环等化合物的解离常数(pK_α)和π-电子分布的关系。结果表明对交替烃,PMO,HMO和PPP在某些情况下,有类似的平行结果。pK_α与活性原子上的电荷密度q_w有着良好的线性关系。但对芳香甲酸和含氮杂环,pK_α与q_x有反比关系。对芳香甲酸pK_α主要由偶极矩决定。而含氮杂环主要由氮原子中的孤对电子与最高充满轨道中的电子间的排斥积分所控制。

 
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