Michael Adducts of (Alkynylcarbene)pentacarbonylchromium Complexes: Formation, Stereochemistry, and Thermal Rearrangement | Zendy

Duetsch Michael | Zendy; Stein Frank | Zendy; Meijere Armin De | Zendy; Lackmann Rolf | Zendy; Pohl Ehmke | Zendy; HerbstIrmer Regine | Zendy

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Michael Adducts of (Alkynylcarbene)pentacarbonylchromium Complexes: Formation, Stereochemistry, and Thermal Rearrangement

Author(s) -

Duetsch Michael,

Stein Frank,

Meijere Armin De,

Lackmann Rolf,

Pohl Ehmke,

HerbstIrmer Regine

Publication year - 1992

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19921250913

Subject(s) - chemistry , carbene , adduct , tetrahydrofuran , chromium , ligand (biochemistry) , stereochemistry , crystal structure , medicinal chemistry , crystallography , catalysis , organic chemistry , receptor , biochemistry , solvent

β‐Donor‐substituted α,β‐unsaturated chromium carbene complexes (CO) 5 CrC(OEt)C = CR(XR′ n ) ( X = N, O, S; 3, 9, 11–16, 22–25 ) have been synthesized by Michael addition of amines, alcohols, and thiols to alkynylcarbene complexes (CO) 5 CrC‐(OEt)CCR ( 1 ). The configurations of the newly formed C–C double bonds have been determined by NOE/NOESY measurements and X‐ray crystal structure analysis. These vinylcarbene complexes lose one carbonyl ligand in refluxing tetrahydrofuran to give tetracarbonyl complexes (CO)4CrC(OEt)C = CR(XR′ n ) (X = N, O, S; 26–28 ).

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