Silver-catalyzed [3+2]-cycloaddition of benzynes with diazocarbonyl species via a postulated (1H-indazol-1-yl)silver intermediate.
We reported a new synthesis of 2-aryl-2H-indazoles via a silver-catalyzed [3+2]-cycloaddition of benzynes with diazocarbonyl reagents. We postulate that this transformation involves the generation of (1H-indazol-1-yl)silver to activate a subsequent arylation with the second benzyne.
Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC.
Chiou-Dong
CD
Wang
Rai-Shung
RS
Liu
D001391:Azo Compounds / Q000737:chemistry*; D001555:Benzene Derivatives / Q000737:chemistry*; D002384:Catalysis; D007191:Indazoles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013379:Substrate Specificity
D001391:Azo Compounds; D001555:Benzene Derivatives; D007191:Indazoles; D009942:Organometallic Compounds; C524146:benzyne; D012834:Silver