Halide and Hydride Nucleophiles

5 mol% [(L-Zr-OH)2 f-BuOH]n 1.25 equiv TMSN3 allyl bromide (excess) chlorobenzene, 25 °C, 48 h 

High enantiomeric excesses for the addition of chloride to meso-epoxides were also obtained with use of a planar-chiral pyridine N-oxide 17 developed by Fu 

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