Pl. Pauson et Md. Spicer, THE ACTION OF LITHIUM PERCHLORATE IN ETHER ON (ALLYL PROPARGYL ETHER)HEXACARBONYLDICOBALT COMPLEXES, Journal of organometallic chemistry, 549(1-2), 1997, pp. 199-202
Lithium perchlorate in dry ether can promote cyclopentenone formation
from (alkyne)dicobalt hexacarbonyls plus alkenes (Khand reaction), but
in lower yield than other promoters. However, in the case of allyl pr
opargyl ether derivatives, these metal-foe products are accompanied by
three types of trinuclear cobalt carbonyl complexes, whose structures
have been established by X-ray crystallography. (C) 1997 Elsevier Sci
ence S.A.