title: Synthesis of 2,5-Diaryl-1,5-dienes from Allylic Bromides Using Visible-Light Photoredox Catalysis.
abstract: Visible-light photoreductive coupling of 2-arylallyl bromides in the presence of the photocatalyst Ru(bpy)3(PF6)2, a Hantzsch ester, and i-Pr2NEt gives 2,5-diaryl-1,5-dienes in high yield. This method avoids the use of stoichiometric metal reductants and is compatible with the presence of halogen, alkyl, electron-donating, and electron-withdrawing substituents on the aromatic ring.
authors.affiliation: Department of Chemistry, 1102 Natural Sciences II, University of California , Irvine, California 92697-2025, United States.
authors.forename: Gerald
authors.initials: G
authors.lastname: Pratsch
authors.affiliation: Department of Chemistry, 1102 Natural Sciences II, University of California , Irvine, California 92697-2025, United States.
authors.forename: Larry E
authors.initials: LE
authors.lastname: Overman
mesh_terms: D000466:Alkadienes / Q000138:chemical synthesis* / Q000737:chemistry; D000498:Allyl Compounds / Q000737:chemistry*; D001965:Bromides / Q000737:chemistry*; D002384:Catalysis; D008027:Light; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes
chemical_list: D000466:Alkadienes; D000498:Allyl Compounds; D001965:Bromides; D009942:Organometallic Compounds; C050431:allyl bromide