从乙烯合成p-烯
Thomas W Lyons1, Damien Guironnet, Michael Findlater
1Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States.
Journal of the American Chemical Society
|September 1, 2012
概括
一种新方法合成了只使用乙烯作为原料的烯. 这种可持续的工艺避免了石油,并产生了没有不必要的异构体的纯烯.
科学领域:
- 化学合成 化学合成
- 可持续的化学可持续的化学
- 石油的替代品 石油的替代品
背景情况:
- 由于石油供应减少,替代化学中间体的需求日益增加.
- 氧烯是一种大容量化学物质,通常来自石油.
- 乙烯是可再生生物质或页岩气的可行替代原料.
研究的目的:
- 开发一种新型的合成路径,只使用乙烯来合成帕-烯.
- 为了实现对烯的选择性生产,不含 орто和元同位素.
主要方法:
- 乙烯的三元化以形成六烯.
- 六烯的转化为2,4-六二烯.
- 2,4-二烯与乙烯的迪尔斯-阿尔德反应产生3,6-二甲基环二烯.
- 将3,6-二甲基环烯脱化为对烯.
主要成果:
- 从乙烯中成功合成了对烯.
- 该过程产生了未被正体或元异构体污染的帕拉-烯.
- 证明了选择性和高效的通往关键化学中间体的途径.
结论:
- 乙烯可以作为唯一的原料,用于对氧乙烯的选择性合成.
- 这种方法为以石油为基础的生产提供了一个可持续的替代方案.
- 开发的途径提供了一条通往各种行业至关重要的纯烯的途径.
相关概念视频
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Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
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