TY - GEN AU - Evans,D A AU - Janey,J M TI - C(2)-symmetric Cu(II) complexes as chiral lewis acids. Catalytic, enantioselective cycloadditions of silyl ketenes SN - 1523-7060 PY - 2001///0719 N1 - Publication Type: Journal Article UR - https://doi.org/10.1021/ol016096z ER -