1. (a) Sonogashira K.; Tohda, Y.; Hagihara, N. Tetrahedron Lett. 1975, 50, 4467-4470. Kenkichi Sonogashira was a professor at Fukui University. Richard Heck also discovered the same transformation using palladium but without the use of copper: J. Organomet. Chem. 1975, 93, 259-263.
2. Sakamoto, T.; Nagano, T.; Kondo, Y.; Yamanaka, H. Chem. Pharm. Bull. 1988, 36, 2248-2252.
3. Ernst, A.; Gobbi, L.; Vasella, A. Tetrahedron Lett. 1996, 37, 7959-7962.
4. Hundermark, T.; Littke, A.; Buchwald, S. L.; Fu, G. C. Org. Lett. 2000, 2, 1729-1731.
5. Batey, R. A.; Shen, M.; Lough, A. J. Org. Lett. 2002, 4, 1411-1414.