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Reaction of 2-methyl-3-morpholino-1-phenylprop-2-en-1-one with Ru3(CO)12

“…Ear lier, we have observed the formation of structurally simi lar oxaruthenacycles in the reactions of Ru 3 (CO) 12 with oxadiene ligands. 1, 6 The oxaruthenacycles in complex 2 are distinguished mainly by the unusual µ 4 coordination of the C(11) atom (four Ru-C(11) distances are in the range 2.052(6)-2.234(6) Å). Apparently, this ac counts for a slight nonplanarity of the oxadiene system (O(9)-C(9)-C(10)-C(11) torsion angle is 15.7°).…”

“…1 In spite of the presence of different substituents in the starting ligands, all the compounds synthesized contain dihydropyran rings with similar struc tures. 1, 6 The formation of complex 3, like the synthesis of com plex 2, is accompanied by elimination of the morpholine fragment from the starting ligand. The oxadiene system of ligand 1, apparently, behaves analogously to oxadienes, which we have studied earlier.…”

Triruthenium complexes obtained in the thermal reaction of Ru3(CO)12 with dibenzylideneacetone

“…By elution with petroleum ether, Ru 3 (CO) 12 (120 mg), complex 5 (25 mg, 13.3%), complex 6 (10 mg, 3.2%), and an unidentified oily complex X (18 mg) were isolated. 1 B. A mixture of Ru 3 (CO) 12 (320 mg, 0.5 mmol) and com pound 1 (468.5 mg, 2 mmol) in heptane (150 mL) was refluxed for 3 h. Same as previous, by elution with petroleum ether, Ru 3 (CO) 12 (100 mg), complex 5 (5 mg, 2.6%), the oily complex X (20 mg), which was characterized by the spectra analogous to those of complex X obtained as described above, and complex 6 (20 mg, 6.4%) were obtained.…”

“…Variation of the substituents showed that the major products contain five membered oxaruthena cycles and dihydropyran rings. 1 The features of the sub stituents´ nature have an impact on the structures of mi nor products. Introduction of new functional groups pro vides additional possibilities for the coordination to metal atoms and allows one to expect the formation of complexes with unusual coordination modes of an organic ligand.…”

“…Introduction of new functional groups pro vides additional possibilities for the coordination to metal atoms and allows one to expect the formation of complexes with unusual coordination modes of an organic ligand. [2][3][4] Earlier, 4 we have studied the reaction of Ru 3 (CO) 12 with dibenzylideneacetone PhCH=CHCOCH=CHPh (DBA) (1), which, in contrast to oxadienes, contains two olefin groups. After long term heating of the reaction mix ture (until Ru 3 (CO) 12 disappeared and the constant IR spectrum was obtained), complexes 2-4 were isolated from the reaction mixture (Scheme 1), 4 whose structures were characterized by X ray diffraction.…”