Synthesis, Table of Contents PAPER© Georg Thieme Verlag Stuttgart ˙ New YorkAn Improved Synthesis of Phenylethynyl[1,2,4]methyltriazinesJeremy P. Olson, F. Ivy Carroll*Center for Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, NC, 27709, USAFax: +1(919)5418868; e-Mail: fic@rti.org; Recommend Article Abstract Buy Article All articles of this category Abstract An improved synthesis of phenylethynyl[1,2,4]methyltriazines is described. In this method, 5-methyl-3-methylthio[1,2,4]triazine is cross-coupled with various phenylacetylenes using microwave conditions to produce phenylethynyl[1,2,4]methyltriazines in increased yields. Interest in the phenylethynyl[1,2,4]methyltriazine scaffold stems from recent reports demonstrating their potency as mGluR5 antagonists. Key words mGluR5 - thioether cross-coupling - triazines - microwave Full Text References References <A NAME="RM06410SS-1">1</A> Carroll FI. Kotturi SV. Navarro HA. Mascarella SW. Gilmour BP. Smith FL. Gabra BH. Dewey WL. J. Med. Chem. 2007, 50: 3388 <A NAME="RM06410SS-2A">2a</A> Chiamulera C. Epping-Jordan MP. Zocchi A. Marcon C. Cottiny C. Tacconi S. Corsi M. Orzi F. Conquet F. Nat. Neurosci. 2001, 4: 873 <A NAME="RM06410SS-2B">2b</A> Rasmussen K. Martin H. Berger JE. Seager MA. Neuropharmacology 2005, 48: 173 <A NAME="RM06410SS-2C">2c</A> Ghasemzadeh MB. Nelson LC. Lu X.-Y. Kalivas PW. J. Neurochem. 1999, 72: 157 <A NAME="RM06410SS-2D">2d</A> Freeman WM. Brebner K. Lynhc WJ. Robertson DJ. Roberts DCS. Vrana KE. Neuroscience 2001, 108: 371 <A NAME="RM06410SS-3">3</A> Gabra BH. Smith FL. Navarro HA. Carroll FI. Dewey WL. Brain Res. 2008, 1187: 58 <A NAME="RM06410SS-4">4</A> Carroll FI. Ann. N. Y. Acad. Sci. 2008, 1141: 211 <A NAME="RM06410SS-5A">5a</A> Gasparini F. Lingenhohl K. Stoehr N. Flor PJ. Heinrich M. Vranesic I. Biollaz M. Allgeier H. Heckendorn R. Urwyler S. Varney MA. Johnson EC. Hess SD. Rao SP. Sacaan AI. Santori EM. Veliçelebi G. Kuhn R. Neuropharmacology 1999, 38: 1493 <A NAME="RM06410SS-5B">5b</A> Cosford ND. Tehrani L. Roppe J. Schweiger E. Smith ND. Anderson J. Bristow L. Brodkin J. Jiand X. McDonald I. Rao S. Washburn M. Varney MAL. J. Med. Chem. 2003, 46: 204 <A NAME="RM06410SS-6">6</A> Negishi EI. Anastasia L. Chem. Rev. 2003, 103: 1979 <A NAME="RM06410SS-7A">7a</A> Liebeskind LS. Srogl J. Org. Lett. 2002, 4: 979 <A NAME="RM06410SS-7B">7b</A> Egi M. Liebeskind L. Org. Lett. 2003, 5: 801 <A NAME="RM06410SS-7C">7c</A> Alphonse FA. Suzenet F. Keromnes A. Lebret B. Guillaumet G. Org. Lett. 2003, 5: 803 <A NAME="RM06410SS-8A">8a</A> Mehta VP. Sharma A. Van der Eycken E. Org. Lett. 2008, 10: 1147 <A NAME="RM06410SS-8B">8b</A> Shook BC. Chakravarty D. Jackson PF. Tetrahedron Lett. 2009, 50: 1013