氰化

The productions of glycin oxidation are complicated and the cost is high. The cyanogenesis is poisonous and unsafe.

国内外合成羟基乙酸的方法主要有甘氨酸氧化法、氰化法、醛类羧化法、甲醛和甲酸甲酯偶联法、草酸电解法、氯乙酸水解法等。

The dietary survey and the hemoglobin analysis were made of 414 children in a day nursery school .

对某幼儿园414名日托儿童采用5日称重法和膳食记录法进行膳食调查、氰化高铁法测定Hb。

Performances of direct extraction of gold from alkaline cyanide solution with guanidine hydrochloride were studied.

研究了盐酸胍直接从碱性氰化液中萃取金的性能。

The behaviors of extracting gold from alkaline cyanide solution with guanidine and phosphoric-oxygenic compound were studied.

研究了胍与磷氧化合物从碱性氰化液中萃取金的性能，考察了胍、磷酸三丁酯和三丁基氧化膦的浓度对金萃取性能的影响。

The company has 96 employees, of whom 37 senior staff person titles, in addition the company also worked with many scientific research institutes set up by the close working relationship, so that in catalytic oxidation, halogenation and cyanation reaction has been more strength, for domestic and foreign customers with quality products.

公司现有职工九十六人，其中中高级职称人员三十七人，此外公司还与多所科研院所建立了紧密的合作关系，从而使公司在催化氧化、卤化和氰化反应方面具有了较强的实力，为国内外客户提供了优质产品。

Methods 4-Hydroxybenzonitrile (2) as the starting material was transformed to 4-hydroxy-thiobenzamide (3) via thioformylation. And ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate (4), which was synthesized via cyclization from 3, was treated with hexamethylenetetramine to generate the intermediate ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate (5). The target compound febuxostat (1) was obtained from 5 by etherification, cyanidation, hydrolysis.

以羟基苯腈为原料，经硫代甲酰化得到对羟基硫代苯甲酰胺(3)，3经环合得到2-（4-羟基苯基）－4-甲基－噻唑－5-羧酸乙酯(4)，4与乌洛托品反应，得到中间体2-（3-甲酰基－4-羟基苯基）－4-甲基－噻唑－5-羧酸乙酯(5)，之后再经醚化、氰化、水解得到目标产物(1)。

We successfully improved the methods of departing O-methyl using boron tribromide, of isolating hydrogen bromide byα-chloro-ethyl chloroformate, and of related in synthesis of natrexone, new medicine, using boron tribromide. This resulted in generation of hydrogen cyanide becoming impossible.

改进了以氯甲酸-α-氯乙酯脱代替溴化氰以及改进的三溴化硼法作为新药纳曲酮合成中相应的方法，去除了合成过程中产生氰化氢气体的可能性。

Hydrogen cyanide is another gaseous effluent in cases where it is not recovered for further use-it can be burned.

氰化氢是在不回收供进一步利用时的另一种气体排放物，它可以被烧掉

Actually, many fruits of the rose family contain cyanogenetic glycosides, which upon ingestion release hydrogen cyanide gas.

事实上，许多水果的玫瑰家族包含cyanogenetic甙，其中摄食后释放氰化氢气体。

Hydrogen cyanide is removed first as overhead at more than 99.5 percent purity and can be recovered and used directly or burned in flare .

氰化氢删除第一的开销超过99.5百分之纯度和可以回收和利用直接或焚毁耀斑。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。