乙酰苯

The reducing-coupling reaction of benzoyl chloride under Dy/n-BuBr was complex. Besides diphenyl diketone, benzoin and ring-opening product of THF were also obtained.

苯甲酰氯在Dy/n-BuBr作用下的还原偶联反应较为复杂，除得到二苯基乙二酮外，还得到四氢呋喃开环产物以及安息香。

A novel method to prepare polyrotaxane in solution by α-cyclodextrins and dumbbell-like poly derivative with reversible acylhydrazone bond and big end stopper (2',4-dinitrophenyl) is described.

合成了具有可逆酰腙键的2，4-二硝基苯甲醛封端的哑铃型聚乙二醇衍生物。

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。

Bromo-2′,4′-dichloroacetophenone was synthesized in three steps,w hich were bromization ,chlorination and acylation,from glacial acetic acid and m -dichlorobenzene.

以冰乙酸和间二氯苯为原料，经溴化、氯化、酰化三个步骤，制得 2—溴- 2′，4′-二氯苯乙酮，产率达 70 %。

Ethyl phenoxyacetate has been synthesised by the reaction of phenol with ethyl chloroacetate under the condition of solid-liquid phase transfer catalysis using PEG-400 as the catalyst.

于固一液相转移催化条件下，以PEG-400为催化剂，通过苯酚与氯乙酸乙酯反应合成了苯氧基乙酸乙酯。与85％的水合肼作用得到相应的酰肼。

Trans-3-phenylglycidate ethyl ester was prepared from benzaldehyde and ethyl chloroacetate through Darzens condensation reaction.

以苯甲醛和氯乙酸乙酯为原料，经Darzens 缩合反应合成了反式-3-苯基缩水甘油酸乙酯，然后在25℃以氨水开环得赤型-3-苯基异丝氨酰胺。

Starting with commercial available tosylmethyl isocyanide and but-2-enoic methyl ester, pyrrolo[2,1-f][1,2,4]triazine derivatives was prepared by twelve-steps process in total yiled of 5.0%~8% via pyrrole and pyrrolo [2,1-f] [1,2,4] triazine ring formation, substitution and amination reactions etc.

本文以简单的对甲基苯磺酰甲基乙腈和反-2-丁烯酸为原料，经过形成吡咯，吡咯并[2，1-f][1，2，4] 三嗪环，取代，酰胺化等等12步反应，合成了结构新颖的吡咯并[2，1-f][1，2，4] 三嗪衍生物，总收率达5%～8%。

We researched the high molecular polyether,polyamide hot melt adhesive, 2-phenoxy ethanol phenyl cellosolve,propylene glycol phenylate,etc,which have passed appraisal of the provincial science and technology achievement.the company gains higher economy profit after putting into production.

公司设有专业科研机构从事新产品的开发研制工作。先后研制开发成高分子聚醚，聚酰胺热熔胶，乙二醇苯醚，丙二醇苯醚等十多项新产品，均通过省级科技成果鉴定。

Results Eleven compounds were obtained and identified as sarcodonin A, scabronine B, 3β-hydroxy-5α, 8a-epidioxyergosta-6, 22-dien,(22E, 24R)-ergosta-7, 22-diene-3β, 5α, 6β-triol,(22E, 24R)-ergosta-7, 22-diene-3β-ol, benzoic acid, 4-hydroxylben-zaldehyde, 4-monopropanoylbenzenediol, ethy1-β-D-glucopyranoside, thioacetic anhydride,(2S, 2'R, 3S, 4R)-2-(2-hydroxyoctadecanoylamino) docosane-1, 3, 4-triol.

结果共分离鉴定了11个化合物，分别是：sarcodonin A、scabronine B、3β羟－5α，5α-过氧麦角甾－6，22-二烯－3β-醇、(22E，24R)-麦角甾－7，22-二烯－3β，5α，6β三醇、(22E，24R)-麦角甾－7，22-二烯－3β-醇、苯甲酸、对羟基苯甲醛、对羟基苯甲酸乙酯、乙基－β-D-吡喃葡萄糖苷、硫代乙酸酐、（25，2'R，3S，4R）-2-（2-羟基－十八碳酰胺）二十二碳烷－l，3，4-三醇。

The alkylation of a-methylene of PhSO2CH2COPh with alkyl halides catalyzed by quaternary ammonium base resin in 50% aqueous sodium hydroxide solution was investigated.

本文以季铵碱树脂作为聚合物固载的相转移催化剂，在50%氢氧化钠水溶液中催化α-苯磺酰基苯乙酮(1)的α-亚甲基的烷基化反应。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新