Photochemical generation of a reactive transition-metal fragment. Photochemically induced arene replacement reactions of the cyclopentadienyl(p-xylene)iron(II) ion

Synthesis of (η6-arene)(η5-cyclopentadienyl) iron (II) complexes with heteroatom and carbonyl substituents. Part I: Oxygen and carbonyl substituents

“…This synthetic method was devised by Gill and Mann [5][6][7]. Using this technique, the 1,3,5-trimethoxybenzene complex has been prepared in 46% yield from the 1,2-dichlorobenzene complex using a 300 W tungsten lamp as the radiation source.…”

“…This was filtered and air dried, then extracted with acetone (80 ml) and chromatographed on neutral alumina (10 g) eluting with acetone to give 0.32 g IIA, (24%) product. The following complexes were obtained by this method: Table 1 13 C chemical shifts for (g 6 -a-nitroalkylarene)(g 5 The a-nitro-4-methylacetanilide complex gave an inseparable mixture of starting material and product. Reaction of the a-nitrotoluene complex in the absence of SnCl 2 gave a mixture of the corresponding aldehyde and carboxylic acid complexes.…”

(Methoxyborole)cobalt Complexes – Synthesis, Structures and Bonding

“…Both the tube and the lamp were placed into a vessel of appropriate volume covered with aluminum foil, and cooling was accomplished with running water. 1 5 mL) at -60°C. The reaction mixture was warmed to room temperature, the solvent was removed in vacuo, and the residue was extracted into light petroleum.…”

“…[1,2,3] In particular, visible-light irradiation of these complexes causes the replacement of benzene by MeCN + by heating (η-C 4 H 4 BCy)-Co(CO) 2 I (Cy = cyclohexyl) in benzene in the presence of AlCl 3 with subsequent hydrolysis. [7] Herein we report the synthesis of the methoxy derivative [(η-C 4 H 4 BOMe)Co(η-C 6 H 6 )] + (1) and demonstrate its usefulness as a synthon of the [(η-C 4 H 4 BOMe)Co] + fragment.…”

First cobalt (borole)arene complexes [(η-C4H4BOH)Co(arene)]+

“…7,8, 10 In the present study, we prepared related complexes with the borole ligand starting from the dinuclear complex [(η C 4 H 4 BCy)Co(CO) 2 ] 2 (Cy is cyclo hexyl) (1). The reaction of complex 1 with I 2 in dichloro methane afforded the di(carbonyl) iodide complex (η C 4 H 4 BCy)Co(CO) 2 I.…”