R. B.  Kamble, Gadre, S. Haribhau, and Suryavanshi, G. M., ?Formal asymmetric synthesis of (2S,4R)-4-hydroxypipecolic acid via Co(III)(salen)-catalyzed two stereocentered HKR of racemic azido epoxide?, Tetrahedron Letters, vol. 56, no. 10, pp. 1263-1265, 2015.