Iron complexes of 1,1′-bis(diphenylphosphino)ferrocene (BPPF) as efficient catalysts in the synthesis of carbamates. X-ray crystal structure of (BPPF)Fe(CO)3

doi:10.1016/0022-328X(90)85412-R

Journal of Organometallic Chemistry

Volume 389, Issue 2, 12 June 1990, Pages 205-217

https://doi.org/10.1016/0022-328X(90)85412-R Get rights and content

Abstract

1,1′-Bis(diphenylphosphino)ferrocene (BPPF) reacts with a 5–10 molar excess of Fe(CO)₅ to give three new iron complexes (η²-BPPF)Fe(CO)₃ (1), (η¹-BPPF)Fe(CO)₄ (2), and (μ,η¹-BPPF)Fe₂(CO)₈ (3) with the product distribution depending upon reaction conditions. The structure of 1 has been determined. Crystals are monoclinic, space group P2₁/c, with a 9.708(1), b 16.195(2), c 19.869(5) Å, β 95.75(2)°, V 3108(1) Å³, Z = 4, and D_calc 1.49 g cm⁻³. The geometry around the central iron is a distorted trigonal bipyramid, with the two phosphorus atoms occupying axial and equatorial positions. All these compounds can catalyze efficiently the reaction of propargyl alcohol with secondary amines in the presence of CO₂ to provide corresponding carbamate esters. The yields of some carbamates are among the highest (∼ 65%) ever reported in the literature.

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Iron complexes of 1,1′-bis(diphenylphosphino)ferrocene (BPPF) as efficient catalysts in the synthesis of carbamates. X-ray crystal structure of (BPPF)Fe(CO)3

Abstract

Tetrahedron Lett.

J. Organomet. Chem.

Tetrahedron Lett.

J. Organomet. Chem.

Organic and Bioorganic Chemistry of Carbon Dioxide

J. Chem. Soc., Chem. Commun.

Organometallics

J. Chem. Soc., Chem. Commun.

Tetrahedron Lett.

J. Org. Chem.

J. Org. Chem.

J. Org. Chem.

Acc. Chem. Res.

Organometallics

Organometallics

Bull. Korean. Chem. Soc.

J. Am. Chem. Soc.

Inorg. Chem.

J. Am. Chem. Soc.

Iron complexes of 1,1′-bis(diphenylphosphino)ferrocene (BPPF) as efficient catalysts in the synthesis of carbamates. X-ray crystal structure of (BPPF)Fe(CO)₃