The ammonia was evaporated under decreasing pressure, and the precipitate was filtered off and the liquid was poured into hot saturated picric acid solution to get picrate with a yield of 85.0%. The optimum process starting from imidazole-4,5-dicarboxylic acid was: imidazole-4,5-dicarboxylic acid in acetic anhydride was refluxed to get imidazole-4-carboxylic acid, and the product was esterification in ethanol with a catalyzer of concentrated sulfuric acid to get ethyl imidazole-4-carboxylate, at last the compound above was reduced by LiAlH4 in ether at room temperature to get the target compound, the total yield of this route was 49.6%.

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Bromobutane was synthesized from potassium bromide and n-butyl alcohol by adding concentrated sulfuric acid in water. Various affecting factors were investigated.

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Bromooctane was synthesized from potassium bromide(by-product of synthesizing 2-hydroxy-4-octyloxybenzophenone) and n- octanol using concentrated sulfuric acid as a catalyst.

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The experimental result showed that the optimal conditions were the molar ratio of potassium bromide to cyclohexanol 1:0.8, H2O 1.5mL,concentrated sulfuric acid 5mL , reflux reaction for 4h, the separated yield was high up to 93%.

結(jié)果表明，當反應(yīng)條件為：溴化鉀與環(huán)己醇摩爾比1：0.8小www久久久，水1.5mL黄色网站男人天堂，濃硫酸5mL，回流反應(yīng)4h亚洲欧美裸体一级播放，分離產(chǎn)率高達93%爽到高潮嗷嗷嗷叫视频软件。

Benzyl bromide was synthesized from potassium bromide ,a by-product from synthesis of 2-hydroxy-4-n-octyloxybenzophenone(UV-531),and benzoic alcohol in the presence of concentrated sulfuric acid.

溴化鉀作為工業(yè)生產(chǎn)2-羥基-4-正辛氧基二苯甲酮的副產(chǎn)品，在濃硫酸存在的條件下自拍女生裸体自慰，與苯甲醇進行反應(yīng)合成芐基溴国产专区双飞。

The best compost of catalytic-oxidation is scalpped by perpendicular experiment,the best fugitive conditions arestudied in the best of the reaction between sulphuric acid- potassium bromide and sodium iodate .

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Normal propyl cinnamylate was synthesized by the esterification of normal propyl alcohol with cinnamic acid in the presence of potassium bisulfate monohydrate.

應(yīng)用硫酸氫鉀催化肉桂酸與正丙醇的酯化反應(yīng)合成肉桂酸正丙酯。

Five fetuses were diagnosed with female pseudohermaphroditism (21-hydroxylase deficiency in 3 and urorectal septum malformation sequence in 2). Four fetuses were diagnosed with male pseudohermaphroditism (1 with steroid sulfatase deficiency, 1 with presumed camptomelic dysplasia, and 2 undetermined).

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Firstly, normal mice was given orally by SM(qd×2d), and the dysbacteriosis were caused in them ,and then they were given orally by STM,these mice were formed experimental salmonellosis models ,finally these salmonellosis models were treated by bifidobacterium ,and count respectively the cfu/g of STM number in the mice excrement during different time of therapy,detect the index numbers of liver and spleen respectively, detect content of TNF-a in blood and in spleen respectively.

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Methylmercury was extracted from the homogenized tissue with toluene in the presence of copper sulfate, sodium bromide and sulfuric acid

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