110. Asymmetric halogenation of camphor-10-sulfonic acid derived esters: an efficient new route to enantiomerically pure halohydrins and epoxides.
     Oppolzer, W.; Dudfield, P.
     Tetrahedron Lett. 1985, 26, 5036-5040

Successive treatment of chiral esters 1 with LDA/Me₃SiCl and NBS or NCS gave crystalline α-haloesters 3 which furnished halohydrins 4 and terminal epoxides 5 in high e.e..

DOI : 10.1016/S0040-4039(01)80847-9