BIS-DIENE-1,3-IRON MONOCARBONYLS AND PROCESS FOR THE PRODUCTION THEREOF

摘要

1342329 Bis-diene iron monocarbonyls STUDIENGESELLSCHAFT KOHLE mbH 2 Feb 1972 [6 Feb 1971] 4884/72 Heading-C2J [Also in Division C5] Bis-diene iron monocarbonyls, where the diene is an open-chain or cyclic aliphatic 1,3- diene, are prepared by irradiating iron pentacarbonyl and the diene in a solvent at - 60 to + 20‹ C. in the absence of oxygen. The reaction may be effected in two stages with isolation of the intermediate diene iron tricarbonyl. The diene may be butadiene, isoprene, cyclohexadiene, dimethylbutadiene or methyl sorbate, the bis-diene iron monocarbonyls of these dienes (excluding butadiene) being claimed "per se". The solvent may be the diene itself in admixture with a saturated aliphatic or aromatic hydrocarbon. Irradiation is usually by means of a high pressure mercury lamp.