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Jiao, L., Lin, M., Zhuo, L.-G. and Yu, Z.-X. (2010) Rh(I)-Catalyzed [(3 + 2) + 1] Cycloaddition of 1-yne/ene-vinylcyclopropanes and CO: Homologous Pauson-Khand Reaction and Total Synthesis of (±)-α-agarofuran. Organic Letters, 12, 2528-2531.
https://doi.org/10.1021/ol100625e

has been cited by the following article:

• TITLE: Palladium-Catalyzed Sonogashira Coupling Reaction of 2-Amino-3-Bromopyridines with Terminal Alkynes

  AUTHORS: Qing Zhu, Lichun Liao, Guo Cheng, Wen Yang, Yingying Deng, Dingqiao Yang

  KEYWORDS: Palladium Catalyst, 2-Amino-3-Bromopyridines, Terminal Alkynes, Sonogashira Coupling Reaction

  JOURNAL NAME: Modern Research in Catalysis, Vol.6 No.3, July 13, 2017

  ABSTRACT: Palladium-catalyzed the Sonogashira coupling reaction of 3-halogen-2-aminopyridines 1 with terminal alkynes 2 afforded the corresponding 21 target products 3a-3u in the presence of palladium catalyst. The structure of target products 3a-3u was confirmed and characterized by 1H NMR, 13C NMR, and HRMS. The influences of different kinds of catalyst loading, bases, substrates and temperature were also investigated. Under the optimized conditions, including 2.5 mol% Pd(CF3COO)2, 5 mol% PPh3 and 5 mol% CuI as additive, 1 mL Et3N, substrate 1 with terminal alkynes 2 for the cross-coupling reactions at 100°C for 3 h in DMF afforded the corresponding products of 2-amino-3-alkynylpyridines 3 in moderate to excellent yields (72%-96%). The present methodology has provided an effective synthetic method including operational convenience, high efficiency and wide-application.