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Studies on the Photoinduced Cycloaddition Reactions of 2-chloroindole-3-aldehydes and 3-acetyl-2-chloroindoles with Styrenes

Author: WangCaiLin
Tutor: ZhangZuo
School: Lanzhou University
Course: Organic Chemistry
Keywords: 2 - chloro- indole compounds Styrene Light dechlorination Cycloaddition Benzo [c] carbazole
CLC: O626
Type: Master's thesis
Year: 2009
Downloads: 42
Quote: 0
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Abstract


Photosensitization of halogenated compounds the dehalogenation and light induced electron transfer dehalogenation is an important way to generate free radicals , and is widely used in the synthesis of substituted aromatics and cyclic compounds . This paper introduces the light-induced 2 - chloro indole -3 - formaldehyde and 2 - chloro- indole -3 - B ketones and styrene compounds cycloaddition reaction studies . The thesis consists of two parts : The first part briefly introduces the basic principles of light-induced electron transfer reactions in Heterocyclic Chemistry . Highlighted in recent years, halogenated compounds under light irradiation coupling reaction , substitution reaction , an addition reaction , cyclization reaction , in particular, halogenated heterocyclic compounds photochemical reaction . The second part of the detailed study of the in acetone and in the presence of pyridine photoinduced 2 - chloro - indole compound ( 1a to 1f ) and the electron-rich olefins, such as : styrene ( 2a ) , alpha - methyl styrene ( 2b ) , 1 - diphenylethylene ( 2c ) , the cycloaddition reaction on the methoxyphenoxy propylene ( 2d ) , to establish a new light through dechlorination coupling reaction initiator , electrophilic cyclization reaction and deprotection of an aldehyde group the aromatization reaction synthesis of alkyl-substituted benzo [ c ] carbazole simple method.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Heterocyclic compounds
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