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求助!!下午要交差了,但是有点难办的事情没时间翻译了 哪位朋友能帮忙翻译下,感激不尽!! 在线等 , 谢谢各位了!! The use of NaBH4-H2SO4 for the reduction of α-amino acids to the corresponding amino alcohols offers definite advantages: i) operational simplicity, ii) ease of scaling up the reaction without risking explosion, and iii) use of the inexpensive reagents. During the course of our recent studies of bisoxazoline chemistry[1] we need to develop a convenient and reliable procedure for the mole-scale synthesis of α,β-amino alcohols from the corresponding α-amino acids. Although there exist several methods[2], including those described in Organic Syntheses,(and also some amino alcohols are commercially available) these methods require the use of rather expensive reagents (e.g.,LiBH4, BH3-SMe2) and/or careful control of reaction conditions to minimize the risk of explosion that may occur after the induction period. We recommend herein the use of the two inexpensive reagents, NaBH4 and H2SO4, as exemplified by the reduction of D-phenylglycine. |
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论文终于录用啦!满足毕业条件了
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求个博导看看
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投稿Elsevier的杂志(返修),总是在选择OA和subscription界面被踢皮球
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bancage(金币+3):辛苦辛苦 呵呵 2010-05-28 19:17:50
wypward(金币+1):欢迎新虫 2010-05-28 19:22:17
83908458(金币+15, 翻译EPI+1):非常感谢,有个地方我一直弄不明白,看了你写的,, 原来是这样…… 英语语法真重要 2010-05-29 00:34:32
bancage(金币+3):辛苦辛苦 呵呵 2010-05-28 19:17:50
wypward(金币+1):欢迎新虫 2010-05-28 19:22:17
83908458(金币+15, 翻译EPI+1):非常感谢,有个地方我一直弄不明白,看了你写的,, 原来是这样…… 英语语法真重要 2010-05-29 00:34:32
| 使用NaBH4-H2SO4以减少相应氨基醇的α-氨基酸用量具有一定的优点:i) 操作简单,ii) 便于反应的放大,同时避免了爆炸的危险,iii) 用廉价的反应试剂。在双恶唑啉化学的最新研究过程中,我们需要开发一种方便、可靠的摩尔级别合成反应以便从相应的α-氨基酸得到α,β-amino alcohols。尽管目前有几种可供选择的方法,包括在有机合成杂志中提到过的(以及一些市售氨基醇的合成方法),但是这些方法都需要用到昂贵的试剂(如LiBH4, BH3-SMe2),而且必须小心监控反应条件以减小在诱导期爆炸的风险。因此以NaBH4-H2SO4对D -苯甘氨酸的还原为例证,我们推荐使用NaBH4-H2SO4这两种廉价的试剂。 |
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