N. Morlender-vais et al., Intramolecular carbometalation of functionalized terminal alkynes via low-valent titanium complexes, CHEM COMMUN, (19), 2000, pp. 1849-1850
Treatment of delta- and gamma-functionalized monosubstituted alkynes with d
iisopropoxy(eta(2)-propene)titanium induces an intramolecular cyclisation t
o afford the 4- and 5-membered cycloalkanols in good overall yields.