Synthesis and Reactivity of (η6-arene)tricarbonylchromium Compounds Incorporating Propargylamine Units. X-ray Crystal Structures of YCH2C≡CPh[Cr(CO)3] (Y = NMe2, N(Me)(CH2Ph)) and {Pd-trans-C[(Ph)Cr(CO)3]=C(Cl)CH2NMe2(Cl)(Py)}

Elton L.S. Gomes, Manfredo Hörner, Victor G. Young, Jairton Dupont, Vinicius Caliman, Osvaldo L. Casagrande

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Abstract

The syntheses, structures, and reactivities of new (η6-arene)tricarbonylchromium compounds bearing propargylamines are described. The reaction of (η6-C6H5Cl)tricarbonylchromium with propargylamines affords YCH(R)C≡CPh[Cr(CO)3] (1a, R = H, Y = NMe2; 1b, R = Me, Y = NMe2; 1c, R = H, Y = N(Me)(CH2Ph)) in good yield. The reaction of 1a,b with Li2PdCl4 generates the air-stable dimeric compounds {Pd-trans-C[(Ph)Cr(CO)3]=C(Cl)CH(R)NMe2-(μ-Cl)} 2 (2a, R = H; 2b, R = Me), which can be converted to a monomeric and soluble species {Pd-trans-C[(Ph)Cr(CO)3]=C(Cl)CH(R)NMe2(Cl)(Py)} (3a, R = H; 3b, R = Me) after reaction with pyridine. Compounds 1a, 1c, and 3a were structurally characterized by single-crystal X-ray diffraction studies.

Original languageEnglish (US)
Pages (from-to)3898-3903
Number of pages6
JournalOrganometallics
Volume18
Issue number19
StatePublished - Sep 13 1999

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