Abstract
The trimethyl phosphite substituted pentacarbonylpropargyldicobalt cation, [(CHCCH 2) Co 2(CO) 5L] + [L = P(OMe) 3], is significantly more stable than its phosphine analogues (L = PPh 3, PBu 3), and has been converted to a series of ethers. (CHCCH 2OR)Co 2(CO) 5L. Reaction of the (cholesteryl propargyl ether)hexacarbonyldicobalt complex with trimethyl phosphite proceeds without stereoselectivity, and the product suffers metal-carbon rather than oxygen-carbon cleavage on treatment with acid.
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