Synthesis of new binuclear tricarbonylchromium- and -manganese complexes of isoxazolidines by 1,3-dipolar cycloaddition reaction

The reactions of 1,3-dipolar cycloaddition of π-complexes of nitrones of a general formula R2CH=N(O)R1, where R1 = Me, But, Ph, R2 = Ph[Cr(CO)3], C5H4[Mn(CO)3] with (η6-styrene)-tricarbonylchromium and vinyl-(η5-cyclopentadienyl)tricarbonylmanganese have been investigated. These reactions led to the formation of corresponding isoxazolidines with high regio- and diastereoselectivity. The obtained metal-containing isoxazolidines were identified using UV, IR, 1H NMR spectroscopy, mass-spectrometry, and X-ray diffraction analysis.