Liu, Sensheng (2021). Difunctionalization of Olefins by Radicals and Nucleophiles. PhD thesis, Universität zu Köln.
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Abstract
Transition metal free, difunctionalization of olefins by radical and nucleophile is presented in this PhD’s work. The combination of benzoyl peroxide with strong Brønsted acid HPF6 allows the difunctionalizationn of alkenes with radicals derived from thioxanthene, xanthene and thiophenols together with nitrile and alcohol nucleophiles. Mechanistic studies suggest the acid promotes the electron transfer step by making BPO as a better electron acceptor. By using of triarylamine as organo-redox catalyst under transition metal and acid free in difunctionalization of alkenes was further studied. BPO with catalytic amount of triarylamine, alkenes can be difunctionalized by a wide range of alkyl radical, generated from C(sp3)-H or halogenated hydrocarbon, nucleophiles, including nitriles, acetic acid, alcohols and fluoride. Moreover, the oxidative Ritter reaction of allylic or benzylic C-H bonds can be also achieved under this reaction system.
Item Type: | Thesis (PhD thesis) | ||||||||
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URN: | urn:nbn:de:hbz:38-527879 | ||||||||
Date: | 30 July 2021 | ||||||||
Language: | English | ||||||||
Faculty: | Faculty of Mathematics and Natural Sciences | ||||||||
Divisions: | Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Organic Chemistry | ||||||||
Subjects: | Chemistry and allied sciences | ||||||||
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Date of oral exam: | 22 July 2021 | ||||||||
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Refereed: | Yes | ||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/52787 |
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