Oxovanadium(V)-induced dl-selective oxidative coupling of (Z)-boron enolate was demonstrated to give the corresponding 2,3-disubstituted 1,4-diketone in a good yield. High selectivity (up to 94 : 6) was attained when the reaction was performed with VO(OPr-i)2Cl at −30 °C.
T. Amaya, T. Masuda, Y. Maegawa and T. Hirao, Chem. Commun., 2014, 50, 2279 DOI: 10.1039/C3CC49624D
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