Direct C-Arylation of β-Enamino Esters and Ketones with Arynes
摘要:
An efficient, mild, and general method for the C-arylation beta-enamino esters and ketones with arynes has been developed. This methodology provides a facile and direct access to a variety of substituted aromatic beta-enamino compounds in moderate to excellent yield.
Direct C-Arylation of β-Enamino Esters and Ketones with Arynes
摘要:
An efficient, mild, and general method for the C-arylation beta-enamino esters and ketones with arynes has been developed. This methodology provides a facile and direct access to a variety of substituted aromatic beta-enamino compounds in moderate to excellent yield.
[GRAPHICS]Reaction of aryl nitriles with potassium ethyl malonate in the presence of zinc chloride and a catalytic amount of Hunig's base provided beta-amino acrylates in moderate to good yield. Compared to the classical Blaise reaction, this reaction is safer (endothermic), devoid of lachrymatory reagent, and is possible with 0.5-1.0 equiv of zinc chloride.