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Synthesis of Benzothiazoles from 2-Aminobenzenethiols in the Presence of a Reusable Polythiazolium Precatalyst Under Atmospheric CO2

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Authors
양사벽
Advisor
정영근
Major
자연과학대학 화학부
Issue Date
2017
Publisher
서울대학교 대학원
Keywords
Benzothiazole
Description
학위논문 (석사)-- 서울대학교 대학원 : 화학부, 2017. 2. 정영근.
Abstract
First, the functionalization of phenol was done in an aqueous medium. Phenol was halogenated, and followed by an in situ Suzuki cross coupling with benzeneboronic acid. The reaction conditions were mild (low temperature and no use of ligands) with high yields. Next, synthesis of benzothiazoles from 2-aminobenzenethiols and carbon dioxide was carried out using poly(3,4-dimethyl-5-vinylthiazolium) iodide as a precatalyst. The reaction was successfully held under mild conditions (1 atm of CO2 and 60–70 ºC) with broad substrate scope and functional group tolerance. The precatalyst salt was recovered and reused for several times without any loss of activity. Keywords: Phenol, Water, Suzuki Coupling, Benzothiazole, Poly (NHC), Carbon dioxide
Language
English
URI
http://hdl.handle.net/10371/134948
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College of Humanities (인문대학)Korean Language and Literature (국어국문학과)Others_국어국문학과
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