Optically active naphthalene–Cr(CO)3complexes via diastereoselective carbene annulation and haptotropic metal migration

Abstract
Pentacarbonyl[(+)- and (–)-menthyloxycarbene] complexes of chromium react with 3, 3-dimethylbut-1-yne diastereoselectively to give optically active naphthalene–Cr(CO)3 complexes which upon warming undergo an intramolecular haptotropic migration of the metal fragment.

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