1: With zinc(II) chloride; lithium diisopropyl amide in tetrahydrofuran
T=-78°C;
2: With copper acetylacetonate; oxygen in tetrahydrofuran
T=20°C; 0.166667 h;
Lippert, Alexander R.; Naganawa, Atsushi; Keleshian, Vasken L.; Bode, Jeffrey W.
Journal of the American Chemical Society, 2010 , vol. 132, # 44 p. 15790 - 15799