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-335
Subject N-methylative aziridine ring opening and the synthesis of (S)-3-methylamino-3-[(R)-pyrrolidin-3-yl]propanenitrile
Authors Sangyun Na, Won Koo Lee1, Hyun-Joon Ha*
Department of Chemistry, Hankuk University of Foreign Studies, Korea
1Department of Chemistry, Sogang University, Korea
Abstract The preparation of (S)-3-methylamino-3-[(R)-pyrrolidin-3-yl]propanenitrile (1), a key fragment of fluoroquinolone antibiotic PF-00951966 and others was achieved by N-methylative aziridine ring opening, addition of methyl group at the ring nitrogen, and ring-opening via a cyanide nucleophile in a single operation starting from bicyclic (R)-2-[(R)-pyrrolidine-3-yl]aziridine. The starting compound was elaborated from stereoselective conjugate addition of nitromethane to (R)-aziridine-2-yl acrylate followed by selective reduction without breaking the aziridine ring. References: 1. J. Lee, JE. Lee, HJ. Ha, SI. Son, WK. Lee. Tetrahedron Lett. 2015, 56, 856-858. 2. DH. Yoon, P. Kang, WK Lee, Y. Kim, HJ. Ha. Org Lett. 2012, 14, 429-431. 3. MS. Lall, G. Hoge, TP. Tran, et al. J Org Chem. 2012, 77, 4732-4739. 4. J-H. Jung, S Kim, H. Eum, WK. Lee, HJ. Ha. Tetrahedron. 2017, 73(41), 5993-5999.
E-mail ssang0520@gmail.com