Umwandlung der Cluster Fe₃(CO)₉(μ₃‐η²‐N₂Et₂) und Fe₃(CO)₉(μ₃‐NEt)₂ zu organischen Produkten ¹⁾

Abstract

Conversion of the Clusters Fe 3 (CO) 9 (μ 3 ‐η 2 ‐N 2 Et 2 and Fe 3 (CO) 9 (μ 3 ‐NEt) 2 into Organic Products The azoalkane‐bridged cluster Fe 3 (CO) 9 (μ 3 ‐η 2 ‐N 2 Et 2) ( 1 ) and its thermal rearrangement product Fe 3 (CO) 9 (μ 3 ‐NEt) 2 ( 2 ) are converted by standard routes into derivatives with one carbene ligand C(Ph)OEt ( 3 , 4 ). Degradation (thermally or oxidatively) of these compounds produces the diaziridine magnified image ( 5 ) and/or the iminoester EtN = C(Ph)OEt ( 6 ). 4 and moist p ‐tolyl isocyanide form the indole derivative 8 . 1 adds one or two equiv. of alkynes leading to the alkyne‐bridged cluster 9 or the ferrole‐type clusters 10 . The clusters 10 , resulting from HCCPh, exist as two isomers 10a and b which can be equilibrated and separated. An alternative route to 10 c (alkyne: MeCCMe) starts from Fe 2 (CO) 6 (C 4 Me 4 ) by treating it with Fe 2 (CO) 9 and N 2 Et 2 . Photolytic or oxidative degradation of the clusters 10 produces substituted furan 13 , pyrrole 14 , or dihydropyridazine 15 . The crystal structures of the clusters 4 , 9 , 10a , and 10b have been determined.