英语人>网络例句>亚胺唑 相关的搜索结果
网络例句

亚胺唑

与 亚胺唑 相关的网络例句 [注:此内容来源于网络,仅供参考]

Mainly engaged in: Hydrogen-imide hydrochloride, o-chlorophenyl cyclopentanone, 3.4 dimethoxy ethyl benzene, butyn single potassium acid, potassium ethyl malonyl, Ding amide, amide isobutyraldehyde , allyl chloroacetate, isopropyl chloroacetate Benzyl aluminum, cyclopentene, cyanide-o-chlorophenyl, o-methyl chloride, sulfuric acid chloride, p-chlorophenol, imidazole, Pinacolone, one chlorine Pinacolone.

主要经营:盐酸氢亚胺、邻氯苯基环戊酮、3.4二甲氧基苯乙酯、丁炔二酸单钾盐、丙二酸单乙酯钾盐、丁酰胺、异丁酰胺、氯乙酸烯丙酯、氯乙酸苄酯异丙醇铝、环戊烯、邻氯苯氰、邻氯苯甲酯氯、硫酸氯、对氯苯酚、咪唑、频呐酮、一氯频呐酮。

A series of angular thiazonaphthalimides was designed and synthesized by fusing a thiazole ring to the naphthalimide skeleton.

通过在萘酰亚胺母体上并入噻唑杂环,设计并合成了一系列新型的具有角型结构的萘酰亚胺类化合物。

The reaction of chiral isocyanide with N-sulfonylimine catalyzed byRh complex gave 2-imidazoline in 68 - 82% diastereoselectivity.

本论文由五部分组成·在没有任何酸,碱和催化剂存在下, N-磺酰亚胺与异氰乙酰胺反应,以60-94%的产率生成1,3-恶唑。1,3-恶唑的结构由X-ray分析测定。

Absorption spectra indicate that there is little or no interaction between chromphores in the ground state. However, the fluorescence emission of oxadiazole and triphenylamine moieties are almost quenched, which shows that in the excited ground state there exists very effective intramolecular singlet-singlet energy transfer .

研究发现,这些多发色团化合物在基态发色团之间没有作用或作用很小,而其中噁二唑和三苯基胺单元的荧光被严重的猝灭,这说明在激发态下,萘酰亚胺发色团与噁二唑、三苯胺功能团之间发生了分子内单线态—单线态能量转移。

Absorption spectra indicate that there is little or no interaction between chromphores in the ground state. However, the fluorescence emission of oxadiazole and triphenylamine moieties are almost quenched, which shows that in the excited ground state there exists very effective intermolecular singlet-singlet energy transfer.

研究发现,这些多发色团化合物在基态发色团之间没有作用或作用很小,而其中恶二唑和三苯基胺单元的荧光被严重的猝灭,这说明在激发态下,萘酰亚胺发色团与恶二唑、三苯胺功能团之间发生了分子内单线态-单线态能量转移。

Third, we studied the N-alkylation of phthalimide, indole, benzimidazole, succinimide with a variety of halogen in ionic liquid [BF4], [PF_6]. The present method has many obvious advantages, compared to those reported in the literature, including the generality, simplicity of the methodology, the ease of product isolation, the higher yield and potential for recycling of ionic liquids.

第三、研究了离子液体[BF_4]、[PF_6]和BF_4促进邻苯二甲酰亚胺、吲哚、苯并咪唑、丁二酰亚胺的N-烷基化反应,克服了传统溶剂中进行N-烷基化反应要求强碱、反应条件苛刻、时间长、产率一般的不足,改善了反应条件、提高了产率。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

第三章首先以5-[(1′S)-1′,2′-二乙酰氧基乙基]-1-苯基吡唑-3-醛(1)和苯肼为原料,合成了化合物5-(1′S)-1′,2′-二乙酰氧基乙基1-1-苯基吡唑-3-醛-苯腙(2);再用化合物(2)与N-取代苯基马来酰亚胺反应,利用无金属氧化剂—IBD引发1,3-偶极反应,发生分子间的环加成,合成了9种新型手性吡唑连二氧代吡咯啉并

In addition, we have discovered a new reaction, it is that Dy/SiCl_4 can promote imines to give imidazolidines and tetrasubstituted hydrazines.

Dy/SiCl_4体系具有另外一个重要特性,就是我们发现它能够促进亚胺一步生成五取代的咪唑烷和四取代的肼,这是用其它自由基或直接用稀土金属和亚胺反应无法得到的。

Its reaction with ketenes generated in situ from acid chlorides afforded-4--azetidin-2-one, thus provided a 14-member library of-4--azetidin-2-one with yields 76~91% and an excellent stereoselectivity.

我们从PEG支载的苯甲醛出发,经腙的制备及其氯代之后,在三辛胺作用下,由氯代腙原位生成的腈亚胺与亚胺发生[3+2]偶极环加成反应,得到PEG支载四芳基-4,5-二氢-1,2,4-三氮唑衍生物。

Firstly, phenyliodine diacetate was immobilized to the 2% cross-linked polystyrene or the liner polystyrene resin. The more iodine the resin had, the lower conversion to phenyliodine diacetate. We made our endeavor to extend the range of useful application of polystyrene supported phenyliodine diacetate in organic synthesis:(1) the reagent was used as an effective reagent of carbonyl regeneration from oximes and semicarbazones of ketones.(2) the reagent was also applied to the synthesis of 1, 3, 4-oxadiazoles, 1, 3-disubstituted-2-pyrazoline, 2-arylbenzoxazole from aldehyde N-acylhydrazones, aldehyde hydoazones and phenolic Schiff's bases respectively.

首先,我们以2%交联的聚苯乙烯和线性的聚苯乙烯树脂为载体,制备了聚合物负载的二醋酸碘苯,通过研究发现:(1)聚苯乙烯二醋酸碘苯是酮肟、缩氨脲有效的去保护试剂,不仅芳香酮,脂肪酮和α,β不饱和酮的肟、缩氨脲也能顺利转化为相应的酮,实现酮基的再生;(2)我们还利用此试剂,分别与醛的N-酰基苯、N-酰基苯腙及邻羟基芳亚胺反应,在温和的条件下发生成环反应,以良好的产率生成1,3,4-噁二唑、吡唑啉和二取代苯并噁唑等杂环化合物;(3)聚苯乙烯二醋酸碘苯还可有效地将邻羟基芳酮的酰腙经氧化、重排成1,2-二酰基苯。

第2/6页 首页 < 1 2 3 4 5 6 > 尾页
推荐网络例句

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了

The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.

世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。