查询词典 naphthyl
- 与 naphthyl 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The result of the experiment showed that the qualitative medium - speed filter paper can be used as the material of the nitrite - detecting paper: color developing reagent A containing 4 - aminobenzene sulfonamide and N - 1 naphthyl ethylenediamine hydrochloride, and mixtures of 1 : 1 naphthylamine solution and sulfanilic acid solution as color developing reagent.
实验结果表明:定性中速滤纸可以作为亚硝酸根试纸的材料;含有4-氨基苯磺酰胺和N-1-萘基乙二胺盐酸盐的显色剂A及含有1:1的α-萘胺溶液和对氨基苯磺酸溶液的显色剂B,按1:1混合后可以作为显色剂;通过应用实验表明,亚硝酸根试纸具有体积小、便于携带、检测方便、成本低廉等特点。
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A series of 3-naphthyl-2--1,3-thiazolidin-4-ones were synthesized by the three-component one-pot cyclocondensation of naphthylamine, aromatic aldehyde and 2-mercaptoacetic acid using a microwave-assisted method in the presence of DMAP/DCC.
利用微波促进的多组分一锅法,在封管条件下,以萘胺、芳醛和巯基乙酸为原料,4-二甲氨基吡啶/N,N'-二环已基碳二亚胺为催化剂,合成了系列新的噻唑烷酮衍生物,该反应具有时间短、操作简便等优点。
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N-(1-Naphthyl)ethylenediamine dihydrochloride solution was injected into the mixed flow of the water sample and sulfanilamide solution. Red dye formed by the reactions was spectrophotometrically detected at lλmax 540 nm.
将N-(1-萘基)乙二胺二盐酸盐溶液注入到水样和对氨基苯磺酰胺溶液的混合流,在lλmax 540nm处对反应形成的红色染料进行分光光度检测。
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Uranium in the ore is separated and converted into U in HCl andcomplexed with TPC and a new type thoron reagent,2(phosphino-chloro-benzenediazo)-7 (disulfo-naphthyl-diazo)-naphthalene-1, 8 diol-3, 6 disulfonic acid.
铀在 0.5—1.4 mol/l盐酸中,用氯化十四烷基吡啶作增溶剂,铀与偶氮氯膦6,8-萘二磺酸-TPC形成的三元络合物具有极高的灵敏度ε_(705nm=1.6×10~5l·mol~(-1)·cm~(-1)和较好的选择性。
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The present invention relates to compounds of formula wherein R is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkyl substituted by halogen; R is hydrogen or halogen; or R and R are together with the carbon atom to which they are attached -CH=CH-CH=CH-; R is hydrogen, lower alkyl, phenyl optionally substituted by halogen, or is hetaryl, optionally substituted by lower alkyl; R is hydrogen, lower alkyl, phenyl, benzyl, lower alkenyl, lower alkoxy, phenyloxy, benzyloxy, S-lower alkyl, halogen, CN, lower alkyl substituted by halogen or O-lower alkyl substituted by halogen; R is hydrogen or lower alkyl, aryl is phenyl or naphthyl; n is 1, 2 or 3; m is 1 or 2; and pharmaceutically acceptable acid addition salts and tautomeric forms thereof.
本发明涉及式化合物及其可药用的酸加成盐和互变异构形式,其中R 1 是氢、低级烷基、低级烷氧基、卤素或被卤素取代的低级烷基;R是氢或卤素;或R 1 和R与它们连接的碳原子一起是-CH=CH-CH=CH-;R 2 是氢、低级烷基、任选被卤素取代的苯基或者是任选被低级烷基取代的杂芳基;R 3 是氢、低级烷基、苯基、苄基、低级链烯基、低级烷氧基、苯氧基、苄氧基、S-低级烷基、卤素、CN、被卤素取代的低级烷基或被卤素取代的O-低级烷基;R 4 是氢或低级烷基,芳基是苯基或萘基;n是1、2或3;m是1或2。
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A series of N -bonded donor-acceptor derivatives of phenothiazine containing phenyl, anisyl, pyridyl, naphthyl, acetylphenyl, and cyanophenyl as an electron acceptor have been synthesized.
合成了一系列的N10位取代的吩噻嗪给体受体衍生物,这些受体基团包括苯,苯甲醚,吡啶,萘,苯乙酮和苯甲腈。
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The method is based on a diazotion-coupling reaction between benzidine and hydrochloric acid naphthyl ethylenediamine in a hydrochloric acid medium.
在酸性条件下,亚硝酸盐与联苯胺重氮化,再与盐酸萘乙二胺偶联生成蓝色产物,该产物在578 nm处有最大吸收值,并由此建立了一种简单、快速、灵敏的亚硝酸盐测定方法。
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Based on the different reaction results with-menthyl,-8-(2-naphthyl)menthyl or-8-phenylmenthyl as the chiral auxiliary, it is was proposed that the possible p -stacking effect between the aryl of chiral auxiliary and dienyl group of α,β-unsaturated esters is involved in the diastereoselectivity of these reactions.
该反应手性辅基易于回收、选择性好,产率高,这一工作为合成多取代的光学活性乙烯基环丙烷衍生物的提供了一种较为简便的方法。
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The steoreselectiviy showed the E selectivity in most of cases and Z selectivity was presented in larger substituents like mesityl and 1-naphthyl.
进一步增大烯上的取代基则可以得到Z选择性的烯炔产物。利用如此的方式,也许还可以用来合成含烯炔的高分子。
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The polymer also had better moisture resistance because of the hydrophobic nature of DCPD and naphthyl groups.
由于憎水性的萘环结构和环戊二烯环的引入,固化产物也表现出良好的耐水性。
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