Organometallics

Transition metal complexes of small-ring allenes: synthesis of (. eta. 5-C5H5) Fe (CO) 2 (1, 2-cycloheptadiene) OSO2CF3 and BF4

FJ Manganiello, SM Oon, MD Radcliffe…

Index: Manganiello, Frank J.; Oon, Su Min; Radcliffe, Marc D.; Jones, W. M. Organometallics, 1985 , vol. 4, p. 1069 - 1072

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Citation Number: 23

Abstract

q5-C5H5) Fe (CO),(1, 2-cycloheptadiene) OS02CF3, the first example of a M (I1) complex of a sevenmembered-ring allene, has been synthesized by reaction of trimethylsilyl triflate with (q5-C5H5)(CO) ZFe-(7-methoxycycloheptene) in methylene chloride at-78" C. The complex is fluxional (E,= 13.9 kcal/mol) and reacts with NazC03/ethanol to give the ethyl ether 23 of expected regiochemistry. The triflate salt of the allene complex decomposes at room ...