Facile Regiocontrolled Three-Step Synthesis of Poly-Substituted Furans, Pyrroles, and Thiophenes: Consecutive Michael Addition of Methyl Cyanoacetate to α,β-Enone, CuI-Mediated Aerobic Oxidation, and Acid-Catalyzed Paal-Knorr Synthesis
作者:Se-Hee Kim、Jin-Woo Lim、Cheol-Hee Lim、Jae-Nyoung Kim
DOI:10.5012/bkcs.2012.33.2.620
日期:2012.2.20
December 19, 2011An efficient synthesis of poly-substituted furans, pyrroles, and thiophenes was carried out in a regiocontrolledmanner via a three-step process; (i) conjugate addition of methyl cyanoacetate derivatives to α,β-enones, (ii)CuI-mediated aerobic oxidation, and (iii) Paal-Knorr type synthesis of five-membered heterocycles. Key Words : Furans, Pyrroles, Thiophenes, CuI, Paal-Knorr synthesisIntroductionRecently
E-mail: kimjn@chonnam.ac.kr 2011年12月6日接收,2011年12月19日接受 (i) 氰基乙酸甲酯衍生物与 α,β-烯酮的共轭加成,(ii) CuI 介导的有氧氧化,和 (iii) 五元杂环的 Paal-Knorr 型合成。关键词:呋喃,吡咯,噻吩,CuI,Paal-Knorr 合成介绍最近,我们报道了通过氰基乙酸甲酯与α,β-不饱和酮的共轭加成和随后的 CuI 介导的需氧氧化合成 2,5-二酮酯的有效方法。