Our use of 1 is in this area and others have used isomers of 1 as photoactive materials, for use of these isomers see: (a) T. Pautzsch, E. Klemm, Macromolecules Vol. 35, 2002, pp. 1569-1575. (b) A. Ambroise, R. W. Wagner, P. D. Rao, J. A. Riggs, P. Hascoat, J. R. Diers, J. Seth, R. K. Lammi, D. F. Bocian, D. Holten, J. S. Lindsey, Chem. Mater. Vol. 13, 2001, pp. 1023-1034. (c) M. Hissler, R. Ziessel, New J. Chem. Vol. 21, 1997, pp. 843-846. (d) V. Grosshenny, F. M. Romero, R. Ziessel, J. Org. Chem. Vol. 62,

has been cited by the following article:

• TITLE: A Facile and Inexpensive Synthesis of 6-Ethynylbipyridine

  AUTHORS: Jianqiang Huo, John O. Hoberg

  KEYWORDS: 6-Ethynylbipyridine, 2-Bromo-6-Iodopyridine, 2-Methyl-3-Butyne-2-Ol, Palladium Coupling

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.1 No.2, June 30, 2011

  ABSTRACT: An inexpensive synthesis of 6-ethynylbipyridine has been accomplished using Sonogashira coupling of 2-bromo-6-iodopyridine with 2-methyl-3-butyn-2-ol. Subsequent Stille coupling with 2-(trimethylstannanyl) pyridine and hydrolysis provided the target compound in an overall high yield.