Synthesis of cyanohydrin trimethylsilyl ethers of acylferrocenes
摘要:
The addition of trimethylsilyl cyanide to acylferrocenes FcCOR (R. = Me, Et, Pr-n, Pr-i, Ph, p-MeOC6H4, o-ClC6H4, m-ClC6H4, p-ClC6H4, Fc; Fc = C5H4FeC5H5) catalyzed by zinc iodide in methylene chloride provided the corresponding cyanohydrin trimethylsilyl ethers in moderate to high yields. Factors affecting the reaction and yields of adducts were investigated. All new compounds were characterized by IR and H-1 NMR spectroscopies. In addition, the adducts of p-chlorobenzoylferrocene and diferrocenyl ketone were structurally determined by X-ray crystallography. (C) 2003 Elsevier Science Ltd. All rights reserved.