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The synthetic product was identified with mass spectroscopy and IR spectroscopy. The properties of PBZP were dompared with those of two useful photoinitiators, benzoin ethylether and benzophenone.

用质谱与红外光谱对产物作了鉴定,其性能与常用的紫外光敏剂苯偶姻乙醚及二笨甲酮进行了比较。

O xylene was chlorinated in the presence of DMF, 1,2 bis dichlormethyl benzol was made to the main products by controlling the chlorinated degree.

以邻二甲苯为原料,在DMF存在下进行侧链氯化,控制氯化深度,使主产物为邻二-苯。

Synthesis process of benzophenone hydrazone is studied with benzophenone and 80%hydrazine as raw materials.

研究了以二苯甲酮和80%水合肼为原料,合成二苯甲酮腙的工艺,探讨了物料配比、反应时间、浓度等对目的产物收率的影响。

On the basis of above results, the reaction rectification tower to synthesize benzyl chloride was established.

目前,国内均采用间歇釜式生产,一氯乙酸生成的同时也生成了副产物二氯乙酸,反应终点二氯乙酸浓度在12-25%。

From the first and the second part, it is clearly that there are many common senses between"A Chinese Bestiary"and Qu Fu on the myth materials.

从第一、第二部分的论述中可以看出《山海经》和屈赋中的神话材料有许多共同之处,"这种大同小异的现象,只能解释作二者是同一文化区的产物,并且产生年代也相差不远,由于都是根据当时当地神话传说而作,故而才大体相同而又取舍详略各异。"

In the batch process of chlorination, the byproduct -benzyl bichloride comes out when the benzyl chloride content reaches 20%, which causes low single-pass chlorination depth, high consumption of raw materials, much operation cost, and serious contamination to the environment.

釜式反应生产过程中,氯化苄浓度达到20%时即有副产物二氯化苄产生,使单程氯化深度较低,原料单耗和操作费用高,环境污染较重。

METHODS 3-methoxy-7α-methylestra-1,3,5(10)-trien-17β-ol was reducted with lithium and ammonia,then the intermediate was hydrolyzed in oxalic acid and reacted with malonic acid to get 3,3-dimethoxo-7α-methylestra-5(10)-en-17-ol(compound 4),which was oxidated by pyridium bichromate ,reacted with acetylene,and hydrolyzed in oxalic acid again to get the product tibolone.

方法以3-甲氧基-7α-甲基雌甾-1,3,5(10)-三烯-17β-羟基为起始原料经锂胺还原、草酸水解、缩酮化得3,3-二甲氧基-7α-甲基雌甾-5(10)-烯-17β-羟基(化合物4),然后用温和的氧化剂重铬酸吡啶盐氧化、炔化、再水解得目的产物

Bidding in the construction project is the result of market economy.

建筑工程招投标是市场经济的产物,是期货交易的另一种方式。

Of the first oxidation stage of biliverdin for the first time, and found that the intermediate reactions existed during the further oxidation process of the oxidized product of biliverdin, and proposed a ECECE mechanism for the whole oxidation reactions.

发现了胆绿素氧化反应产物再氧化的中间过程及胆黄素的氧化反应,均为首次报道。并提出了胆绿素氧化的ECECE反应机理。

The products of the heme oxygenase reaction,free ferrous iron,carbon monoxide and biliverdin/bilirubin,are all biologically active molecules that may exert profound effects on cell survival and proliferation.

血红素加氧酶在神经系统广泛分布,其反应产物即铁离子、一氧化碳和胆色素都是生物活性分子,对细胞的生存和增殖有广泛的生物学作用。

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