文摘
The addition of carboxylic acids onto 1-hexyne was catalyzed by [RuCl2 (p-cymene) (PTA)] complex to give enol esters. Accordingly, the Markovnikov addition-type product was selectively obtained. The microwave-assisted reactions at 160 °C confirmed the influence of the temperature, where quantitative to excellent yields were obtained in 30 min. The catalyst loading test proved that [RuCl2 (p-cymene) (PTA)] complex can be efficiently used with a 1/1500 ratio to carboxylic acid providing the TON value of 1500. Keywords [RuCl2 (p-cymene) (PTA)] 1-Hexyne Carboxylic acids Enol esters Catalyst loading Microwave chemistry