K. H. Dtz, Angew. Chem. Int. Ed. 14, 644 (1975).
Three component cyclization of an aromatic or vinylic alkoxy pentacarbonyl chromium carbene complex, an alkyne, and carbon monoxide, generating a Cr(CO)3 coordinated phenol:

Solvent effects: K. S. Chan et al., J. Organomet. Chem. 334, 9 (1987). Methods development: S. Chamberlin et al., Tetrahedron 49, 5531 (1993); S. Chamberlin, W. D. Wulff, J. Org. Chem. 59, 3047 (1994). Synthetic applications: W. D. Wulff et al., J. Am. Chem. Soc. 110, 7419 (1988); D. L. Boger, I. C. Jacobson, J. Org. Chem. 56, 2115 (1991). Review: K. H. Dtz, New J. Chem. 14, 433-445 (1990).