溴化钾

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%.

结果表明，当反应条件为：溴化钾与环己醇摩尔比1：0.8，水1.5mL，浓硫酸5mL，回流反应4h，分离产率高达93%。

"Other drugs made from minerals include calomel, a laxative; potassium bromide, a sedative; and calcium gluconate, used in the treatment of rickets."

其它用矿物制成的药包括甘汞，泻药；溴化钾，镇静药；葡萄糖钙，用于治疗佝偻

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 .

研究了在3.0mol/L的硫酸介质中，溴化钾催化碘酸钠氧化偶氮胂M褪色反应的适宜条件与影响因素，建立了催化动力学褪色光度法测定痕量碘的新方法。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

In a statement, KBR said its roughly 20,000 employees and 40,000 subcontractors have performed laudably in a war zone where Army demands shift rapidly and local suppliers don't always maintain ledger books.

在一份声明中，溴化钾说，它大约有20000名员工和40000个分包商的表现laudably在战争区，要求军队迅速转移和本地的供应商并不总是保持总帐书籍。

Seven of them have not been reported.Their structures were confirmed by IR,~1HNMR,MS,and element analysis. 4.Meanwhile,the green methylation procedure of imides was developed by using dimethyl carbonate as methylation reagent.A series of imides,for example,phthalimide,3,4-dibromo-maleimide and succincide were used for substrates.The effects of DABCO(1,4-diazabicyclo [2.2.2]octane)and DBU(1,8-diazabicyclo[5.4.0]undec-7-ene)as a catalyst in this kind of reactions were investigated.2-Bromo-3-(1-methylindolyl-3-yl)-1-methyl-1H-pyrrole-2,5-dione was prepared by using dimethyl carbonate,which further expanded the use of dimethyl carbonate,as a green agent in organic synthesis.

在以硫酸二甲酯为甲基化试剂对3，4-二溴马来酰亚胺进行N-甲基化反应合成3，4-二溴-N-甲基马来酰亚胺的同时，以碳酸二甲酯为甲基化试剂，对3，4-二溴马来酰亚胺、邻苯二甲酰亚胺、琥珀酰亚胺等酰亚胺类化合物的N-甲基化反应进行了研究；考察了1，4-二氮杂双环[2.2.2]辛烷，1，8-二氮杂双环[5.4.0]十一碳-7-烯、碳酸钾和四丁基溴化铵等作为催化剂对碳酸二甲酯N-甲基化反应的反应时间和收率等的影响，并应用碳酸二甲酯为甲基化试剂，合成了N-甲基-3-溴-4-(1-甲基-吲哚-3)-马来酰亚胺。

In one case, a freight-shipping subcontractor confessed to giving $25,000 in illegal gratuities to five unnamed KBR employees "to build relationships to get additional business," according to the man's December 2007 statement to a federal judge in the Rock Island court.

在一个案例中，一家货运航运分包商交待给二万五千元，在非法酬金至5无名溴化钾雇员&，以建立合作关系，以获得更多的业务，&根据该名男子的2007年12月发表声明，一联邦法官在岩石岛法院。

At least 22 KBR troop support subcontracts were inflated through similar errors, Mazon's attorney J.

至少有22名溴化钾部队支援分包合同被夸大通过类似的错误，马宗的律师j。

KBR attorneys said the company informed federal officials of three similar "double conversions" on other subcontracts.

溴化钾律师说，该公司获悉美国联邦官员的三宗类似的&双转换&，对其他分包合同。

In the medium of H2SO4 with KBr as the catalyst, the color of Cresol Red oxidized by iodate can be faded, and the degree of color fading is proportional to the concentration of iodine and the linear range of determination is 20 μg/25 mL~50 μg/25 mL.

在硫酸介质中、在溴化钾催化条件下，碘酸根对甲酚红有褪色作用，且褪色的程度与碘酸根的量有关，碘定量测定的线性范围为20μg/25mL～50μg/25mL，检出限为6.57×10-1μg/25mL，回收率为98.1%～104.2%。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。