页数:65页文件大小:882.5 KB来源: 有机化学(甲)ppt课件
本课件介绍有机合成的基本思路,讲解逆合成分析与切断方法,说明原料选择与官能团转换,并归纳常见有机人名反应的应用场景。并通过典型合成路线的设计实例巩固逆合成分析方法。
Introduction to Organic Synthesis
合成化学家在旧的自然界旁又建起了一个新的自然界。——R. B. Woodward
E. J. Coreyretrosynthetic analysisThe Noble Prize in 1990
1. Retrosynthetic an:本页以图示与数据为主,提取文字如下。
1. Retrosynthetic analysisIn this procedurethe target moleculeis transformed progressivelyinto simpler structu
res bydisconnecting selected carbon-carbonbonds. These disconnections rest ontransforms, which are thereverse
of plausible synthetic constructions. Each simpler structure,so generated, becomes the starting point forfurth
er disconnections,leading to a branched set of interrelated intermediates. Aretrosynthetic transform is depict
ed by the=>symbol, as shown innext slide. Once a complete analysis has been conducted, the desiredsynthesis ma
y be carried out by application of the reactionsunderlying the transforms.
本页源数据为无分隔提取文本,表格结构建议对照原课件图片核对。
SynthonEquivalentDisconnectionrest on transforms
Synthon EquivalentPolarInversion
Polar Inversion
Symbol
Functional Group transforms
2. Disconnection on TMs without FG——adding FG
3. Disconnection on TMs with monoFGApplication of Malonic ester
80% 99%80%
酮式烯醇式Application of Ethyl AcetoacetatepKa=11
Application of Epoxy compounds
Disconnection on Cyclohexene
Birch还原
4. Disconnection on Bifunctional groups(1)α,β-unsaturated compounds
(2)α,β-unsaturated carboxylic acid
(3)β-Hydroxyester
(4)1,3-bicarbonyl
(5)1,4-bicarbonyl
(6)1,5-bicarbonyl——迈克尔(Michael)加成反应
(7)1,6-bicarbonyl
Birch还原
4. Rearrangment
嚬哪醇重排:
5. Examples
A synthesis of N-ethyl-2-aminomethylspiro[3.3]heptane from startingcompounds having no more than three contiguous carbon atoms is required.
A synthesis of 2,7-dimethyl-4-octanone from starting compounds havingno more than four contiguous carbon atoms is required.
A synthesis of 1,4,6--trimethylnaphthalene frompara-xylene and other startingcompounds having no more than four contiguous carbon atoms is required.
A synthesis of 2-ace:本页以图示与数据为主,提取文字如下。
A synthesis of 2-acetyl-2-methylbicyclo[2.2.2]octane from cyclohexene and otherstarting compounds having no mo
re than four contiguous carbon atoms is required.
本页源数据为无分隔提取文本,表格结构建议对照原课件图片核对。
有机人名反应
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