查询词典 benzoic

Synthesis process Molecular Formula:〓 Molecular Weight: 394 Chemicla name: N-(2, 3-dihydro-2, 7-dimethyl-benzofuran-1-acyl)-N'-tert-butylN'-(3, 5-dimethyl benzoyl) hydrazine Structural formula:〓 This article define a synthesis method of JS118 with (2, 3-dihydro-2, 7-dimethylbenzofuranyl)-6-formic acid, tert-butyl hydrazine hydrochloride acid and 3, 5-dimethyl benzoic acid as main intermediate through four steps of reaction involving, acyl chloridation condensation and so on.

本文主要的研究工作内容：(1)以N-特丁基双酰肼为先导结构，利用分子等排原理和类同合成法进行先导设计，有目的、有选择地重点改变R〓、R〓基团，将具有不同取代基的苯环以及呋喃环、苯并呋喃环、吡咯环、吡啶环等杂环、稠杂环与先导结构进行有机的组合。

Condensation of cinnamaldehyde with methyl crotonate in the presence of alcohol-flee potassium methoxide gives,after hydrolysis,p-phenyl-benzoic acid in low yield.Its structure has been ascertained by direct comparison with an au- thentic sample.

桂皮醛与α-丁烯酸甲酯在催化剂去醇的甲氧基钾影响下进行反应，得到低产率的对-苯基-苯甲酸，共结构经用已知方法所得同样的酸直接加以比较而确定。

The cholesterol and 4-(trans-4-alkyl cyclohexyl)benzoic acid derivatives have been connected with different length spacers give 40 new dimerliquid crystals.

通过间隔基和末端烷基链长短的调节合成了40种新的新型手性二介晶结构液晶化合物。

The synthesis,characterization and mesomorphic properties of new dimerliquid crystalline compounds D-mn and their derivatives D2F-mn based on4-(trans-4-alkyl cyclohexyl)benzoic acid and cholesterol are described in this thesis.

本文描述了一系列新型双介晶结构液晶化合物ω-[4-(反-4-正烷基环己基)苯甲酰基]脂肪酸胆固醇酯及衍生物(D2F-mn)的合成及其结构表征和介晶性质。

With benzoic acid, terephthalic acid, 2. 6naphthalene dicarboxylic acid, dimethyl-2, 6-naphthalene dicarboxylate as solutes, water, acetic acid, N, N-dimethylformamide, N, N-dimethylacemide, dimethyl sulphoxide, N-methl2-ketopyrolidine, and the mixture of water and acetic acid as solvents respectively, the solubilities of 15 binary systems and 4 ternary systems were determined.

实验以苯甲酸、对苯二甲酸、2，6-NDCA、2，6-萘二甲酸二甲酯为溶质，以水、醋酸、N，N-二甲基甲酰胺、N，N-二甲基乙酰胺、二甲基亚砜、N-甲基-2-吡咯烷酮以及水和醋酸的混合溶液为溶剂，测定了十五个二元物系和四个三元物系的溶解度数据。

When pumped with 800 nm laser irradiation, 2 {4 [2 (4 dimethylamino phenyl vinyl] phenyl} ethylamino ethanol and 2 {4 [2 (4 diethylamino phenyl vinyl] phenyl} ethylamino ethanol show strong two photon induced blue fluorescence at 436 and 440 nm respectively, while DMANHAS and 4 nitro benzoic acid 2 {4 [2 (4 diethylamino phenyl vinyl] phenyl} ethylamino ethyl ester exhibit no fluorescence.

在800 nm的飞秒脉冲激光激发下，反式-4-(N-羟乙基-N'-乙基氨基)-4'-二苯乙烯和反式-4-(N-羟乙基-N'-乙基氨基)-4'-二苯乙烯均发出较强的蓝紫色上转换荧光，荧光峰分别位于436和440 nm，而DMANHAS和反式-4-[N-(乙氧基羰基-4-硝基苯基)-N'-乙基氨基]-4'-二苯乙烯没有荧光。

Three new chromophores and 4 nitro benzoic acid 2 {4 [2 (4 dimethylamino phenyl vinyl] phenyl} ethylamino ethyl ester have been synthesized and the structures have been characterized by 1H NMR, IR and elemental analyses.

作者中文名：延云兴；陶绪堂；杨家祥；王东；于晓强；赵显；蒋民华摘要：合成了反式-4-[N-(乙氧基羰基-4-硝基苯基)-N'-乙基氨基]-4'-二苯乙烯和三个新有机化合物。

The method is simple and rapid, and it has been applied to the determination of benzaldehyde and benzoic acid in electrosynthetic samples with satisfactory results. The recovery was between 91.9% to 106.5% and 95.8% to 99.2% respectively, and the relative standard deviation was less than 0.15% and 0.92%, respectively.

本法简便、快速，应用干多个电合成产品中苯甲醛和苯甲酸含量的测定，均获得比较满意的结果，其加标回收率分别在91.9%-106.5%和95.8%-99.2%之间，相对标准偏差分别小于0.15%和0.92%。

The long wave ultraviolet grass green fluorescence function material is synthesized with the p-toluensulfonyl chloride and o-amino benzoic acid as raw materials,pyridine as solvent,and sodium ethoxide as activator.

缑卫军，刘新奇，紫外长波草绿荧光功能材料的合成研究以对甲苯磺酰氯和邻氨基苯甲酸为原料，吡啶为溶剂，乙醇钠为催化剂，合成紫外长波草绿荧光功能材料。

Low density silicon nitride with about 55% porosity and globed macropores was prepared by reaction-bonded raw silicon powder and adding 30% in mass pore-forming agent of benzoic acid ball-like particles.

以硅粉为原料，添加质量分数为30%的成孔剂球形颗粒，反应烧结制备了气孔率为55%，具有球形宏观孔的低密度多孔氮化硅陶瓷。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失