Solvent, chelation and concentration effects on the benzannulation reaction of chromium carbene complexes and acetylenes

Article abstract of DOI:10.1016/0022-328X(87)80037-2

The reactions of a number of chromium carbene complexes (CO)5Cr=C(OMe)R (R = Ph, o-OMePh, p-OMePh, o-O-tBuPh, 1-C6H9, 1-C5H7O) were examined with a variety of acetylenes (R'CCR², R¹, R² = H, Me, Et, n-Pr, Ph, SiMe3) in sol