Via Au-Catalyzed Miscellaneous Reactions

A series of substituted 1,2-dihydroquinolines were obtained in moderate to good yields. This method features a short reaction time and a broad substrate scope. 

2-methylquinoline (quinaldine) 78 when the reactions were conducted in the presence of PPhg (1 equiv. per Pt atom). 

1) 3-Butynyl tosylate (3-6 equiv.), CH3CN - NaHC03 or CS2CO3 (4-8 equiv.) 

Initially, the authors proposed the mechanism involving a-oxo gold carbine formation. Lately, Zhang and Houk presented a revised mechanism for the Au-catalyzed system, which involves a concerted heteroretroene reaction based on 

Synthesis of Seven-Membered /V-Heterocycles 12.3.3.1 Via Au-Catalyzed C(sp )-H Functionalization 

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