title: Gold-catalyzed formal [3 + 3] and [4 + 2] cycloaddition reactions of nitrosobenzenes with alkenylgold carbenoids.
abstract: We report two new formal cycloaddition reactions between nitrosobenzenes and alkenylgold carbenoids. We obtained quinoline oxides 3 in satisfactory yields from the gold-catalyzed [3 + 3]-cycloadditions between nitrosobenzenes and alkenyldiazo esters 1. For propargyl esters 5, its resulting gold carbenes react with nitrosobenzene to give alkenylimine 8, followed by a [4 + 2]-cycloaddition with nitrosobenzene.
authors: Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC.
authors: Vinayak Vishnu
authors: VV
authors: Pagar
authors: Appaso Mahadev
authors: AM
authors: Jadhav
authors: Rai-Shung
authors: RS
authors: Liu
mesh_terms: D002384:Catalysis; D003500:Cyclization; D006046:Gold / Q000737:chemistry*; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D009603:Nitroso Compounds / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D009603:Nitroso Compounds; C030011:carbene; D006046:Gold; D008697:Methane; C012456:nitrosobenzene