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guolianshun

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[求助] 求助,帮忙翻译一下几句话,谢谢!

4-Methyl-5-propoxyazole (II). Method A. A solution of (I) (i0 g) in chloroform (17
ml) was added droDwise with stirring during 1 h to a mixture of phosphorus pentoxide (58 g),
roasted kieselguhr (13 g), and dry chloroform (240 ml). The reaction mass was heated at the
boiling point for 5 h and the chloroform was removed in vacuum. The solid residue was added
in portions with stirring at a temperature no greater than 15~ to 20% aqueous potassium
hydroxide solution (250 ml). Compound (II) was extracted with chloroform (3 • 150 ml) and
the extract dried with sodium sulfate. The solvent was removed in vacuum. The residue was
distilled in vacuum. Yield was 4.46 g (50%), bp 78-81~ (20 nun), n~ ~ 1.4420. According to
literature data bp 98-99~ (53 mm) [ii].
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739592694

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guolianshun: 金币+10, 翻译EPI+1, 有帮助 2014-03-13 15:09:17
化合物二应该是你的目标产物,
化合物一应该是你的原料。
  化合物二的制备方法A:将溶有原料一的氯仿溶液滴加到下述搅拌的体系,此体系是五氧化二磷(58克),
烤硅藻土(13克),干燥氯仿(240毫升)。滴加过程控制在1h,之后升温到回流,反应五个小时。反应完毕减压蒸去氯仿,蒸完的残留物分批加入20%的氢氧化钾水溶液(250ml)中,温度不要超过15度,化合物二用氯仿萃取三次,有机相干燥浓缩,残留物减压精馏得你要的产品
我行我秀,自我本色,不随波逐流。
2楼2014-03-12 15:15:07
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