Table 3.
Ar = 4–(t-Bu)C6H4.
Conditions: 4 (1 equiv), (R)–STRIP (10) (5 mol%), Na3PO4 (3 equiv), ArN2BF4 (1 equiv), MTBE, rt, 2–8 h.
Isolated yields.
ee determined by chiral phase HPLC.
Relative and absolute stereochemistry assigned by analogy to 5.