N. Iwasawa et T. Matsuo, SYNTHESIS OF POLYCYCLIC COMPOUNDS BY THE REACTION OF CO-2(CO)(6) COMPLEXED 1-[O-(1-ALKYNYL)PHENYL]CYCLOPROPANOLS, Chemistry Letters, (4), 1997, pp. 341-342
1-[o-(1-Alkyinyl)phenyl]cyclopropanols are converted to 2,3-dihydro-1-
naphthalenone derivatives by heating their hexacarbonyldicobalt comple
xes in 2-propanol. Furthermore, a new type of isomerization-cyclizatio
n reaction proceeds to give 3a,4-dihydro-3H-cyclopenta[a]inden-2-one d
erivatives when the same reaction is carried out in the presence of DA
BCO.