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rainbow560铁杆木虫 (小有名气)
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【求助】Schotten-Baumann method
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| Sample Text请各位大虾帮帮忙，有谁知道Schotten-Baumann method 这个方法的原理及具体步骤吗？先谢谢大虾了！ |
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rainbow560
铁杆木虫 (小有名气)
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找到了一些资料，和大家分享。希望能和大家多多交流，谢谢！ Schotten-Baumann Reaction Schotten-Baumann Conditions The use of added base to drive the equilibrium in the formation of amides from amines and acid chlorides. The acylation of amines with carboxylic acid chlorides leads to the production of one equivalent acid, which will form a salt with unreacted amine and diminish the yield. The addition of an additional equivalent of base to neutralise this acid is a way to optimise the conditions. Normally, aqueous base is slowly added to the reaction mixture. In general, the use of biphasic aqueous basic conditions is often named "Schotten-Baumann conditions". Mechanism of the Schotten-Baumann Reaction -------------------------------------------------------------------------------- Recent Literature Practical Synthesis of Aryl Triflates under Aqueous Conditions D. E. Frantz, D. G. Weaver, J. P. Carey, M. H. Kress, U. H. Dolling, Org. Lett., 2002, 4, 4717-4718. http://www.organic-chemistry.org ... umann-reaction.shtm |
2楼2010-03-16 16:23:21
rainbow560
铁杆木虫 (小有名气)
- 应助: 0 (幼儿园)
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3楼2010-03-16 16:26:22
rainbow560
铁杆木虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 10150.2
- 帖子: 110
- 在线: 47小时
- 虫号: 478267
- 注册: 2007-12-14
- 性别: GG
- 专业: 无机非金属基复合材料
4楼2010-03-16 16:35:47