Facile synthesis of α, β-unsaturated esters through a one-pot copper-catalyzed aerobic oxidation-Wittig reaction
2017
Ren, Cheng | Shi, Zhenyu | Ding, Weijie | Liu, Zhiqing | Jin, Huile | Yu, Xiaochun | Wang, Shun
An efficient one-pot synthesis of α, β-unsaturated esters through the aerobic oxidation - Wittig tandem reaction of alcohols and phosphorous ylide is developed. This new method operates under mild reaction conditions, and uses CuI/TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidine -N-oxyl) as co-catalyst and air (O2) as the oxidant. It tolerates a wide range of functionalized benzylic alcohol and aliphatic alcohols.
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