121st General Meeting of the KCS

Type Poster Presentation
Area Organic Chemistry
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code ORGN.P-509
Subject Iron-Catalyzed Nucleophilic α-Amino Radical Addition-Cyclization Reactions to Electron-Deficient Olefins
Authors Joon Young Hwang, Eun Joo Kang*
Department of Applied Chemistry, Kyung Hee University, Korea
Abstract

Iron polypyridyl complex-catalyzed oxidative radical cyclization with nucleophilic α-amino radicals and electron-deficient olefins was achieved. Iron polypyridyl complexes have a range of redox potential (E1/2 = +0.82~1.10 V), which could oxidize tertiary amines, anilines and enamines (Eox = 0.8~1.0 V).1 One electron oxidation of tertiary amine by Fe(III) complex and further deprotonation of amine radical cation offers nucleophilic α-amino radical species, which is reactive to N-substituted maleimides and electron-deficient alkenes.2 Under optimal condition, we synthesized various tetrahydroquinoline derivatives. Additionally, the synthetic utility of this reaction was presented in the further transformation to pyrroloquinoline and tetrahydropyridazinedione of products.3 Herein, we present oxidative cycloaddition of tertiary amines with electron-deficient olefins under easy operation and high catalytic efficiency. Acknowledgement This work supported by the GRRC program of Gyeonggi province (GRRCKyungHee2017-A01) and National Research Foundation (NRF-2015R1D1A1A01060349). Reference 1. a) Ju, X.; Li, D.; Li, W.; Yu, W.; Bian, F., Adv. Synth. Catal. 2012, 354, 3561. b) Comito, R. J.; Finelli, F. G.; MacMillan, D. W. C., J. Am. Chem. Soc. 2013, 135, 9358. 2. Zhu, S.; Das, A.; Bui, L.; Zhou, H.; Curran, D. P.; Reuping, M., J. Am. Chem. Soc. 2013, 135, 1823. 3. Nishino, M.; Hirano, K.; Satoh, T.; Miura, M., J. Org. Chem. 2011, 76, 6447.

E-mail jyhwang08@khu.ac.kr