Migration of Groups from Boron to Carbon
For other examples see:
Matteson, D. S.; Sadhu, K. M. J. Am. Chem. Soc. 1983, 105, 2077 (Brevicomin synthesis).
Maurer, Armstrong, J. Org. Chem. 1996, 61, 3106 (Tautomycin synthesis)