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wu_bing

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[求助] 有篇德文求翻译已有1人参与

求大神翻译德文专利：主要是例一和例2的制备方法。以及大致的合成要求！
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  • 附件 1 : EP1310476A1.pdf
    • 2015-12-14 22:43:10, 230.03 K

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很高兴在这里和大家探讨
1楼2015-12-14 22:45:11
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John126

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【答案】应助回帖

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感谢参与，应助指数 +1
wu_bing: 金币+30, ★有帮助, 谢谢 2015-12-18 09:45:00
Example 1 Preparation of 2,3-pentanedione on a Laboratory Scale Preparation of the metering:
100 g and 84 g of hydroxyacetone paraldehyde are mixed. Carrying • guidance of the reaction:
27 g of concentrated hydrochloric acid, 33 g of water and 2.5 g of tetrabutylammonium bromide solution., 50 wt .-% in water, are combined and heated to 50 ° C. At this temperature the metering mixture (temperature metering mixture: 19-21 ° C) were added within 7 hours.
Then a further 38 g water are added to the reaction mixture and a mixture which consists of water and 2,3-pentanedione substantially distilled off at atmospheric pressure. Subsequently, the phases are separated. This gives 125 g • old 2,3-pentanedione, 92 wt .-% pure according to gas chromatogram. This corresponds to a yield of 85% of the starting material used in deficit.
Example 2 Preparation of 2,3-pentanedione on the industrial scale production of the metering:
150 kg and 126 kg hydroxyacetone paraldehyde are mixed. Carrying • guidance of the reaction:
40 kg of concentrated hydrochloric acid, 50 kg of water and 4 kg of tetrabutylammonium bromide solution., 50 wt .-% in water, are successively in the reactor GEF • filled and heated to 50 ° C. At this temperature the metering mixture (temperature metering mixture: 10 ° C.) is metered within 10 hours.
A further 60 kg of water are added to the reaction mixture and a water / 2,3-pentanedione mixture is distilled off at atmospheric pressure. Subsequently, the phases are separated. This gives old • 174 kg of 2,3-pentanedione, 94 wt .-% pure according to gas chromatogram. This corresponds to a yield of 81% of the starting material used in deficit.
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2楼2015-12-15 09:33:45
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wu_bing

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引用回帖:
2楼: Originally posted by John126 at 2015-12-15 09:33:45
Example 1 Preparation of 2,3-pentanedione on a Laboratory Scale Preparation of the metering:
100 g and 84 g of hydroxyacetone paraldehyde are mixed. Carrying • guidance of the reaction:
27 g  ...

are combined and heated to 50 ° C. At this temperature the metering mixture (temperature metering mixture: 19-21 ° C) were added within 7 hours.
大师--是在50 ° C保温反应7小时吧？计量混合时候19-21 ° C?是这意思吧？
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很高兴在这里和大家探讨
3楼2015-12-15 09:58:40
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John126

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引用回帖:
3楼: Originally posted by wu_bing at 2015-12-15 09:58:40
are combined and heated to 50 ° C. At this temperature the metering mixture (temperature metering mixture: 19-21 ° C) were added within 7 hours.
大师--是在50 ° C保温反应7小时吧？计量混合时候19-2 ...

上文中"the metering mixture"应该是指100 g and 84 g of hydroxyacetone paraldehyde are mixed，这两个物质在19-21℃混合。将此混合物慢慢加到预先加热至50℃的混合物中（27 g of concentrated hydrochloric acid, 33 g of water and 2.5 g of tetrabutylammonium bromide solution., 50 wt .-% in water, are combined ），滴加时间7小时
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wu_bing
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4楼2015-12-17 09:59:37
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wu_bing

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引用回帖:
4楼: Originally posted by John126 at 2015-12-17 09:59:37
上文中"the metering mixture"应该是指100 g and 84 g of hydroxyacetone paraldehyde are mixed，这两个物质在19-21℃混合。将此混合物慢慢加到预先加热至50℃的混合物中（27 g of concentrated hydroc ...

5楼2015-12-17 10:56:21
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