Work

New Benzylpotassium Reagents and Their Utility for the Synthesis of Homoleptic Uranium(IV) Benzyl Derivatives

Year: 2015

Type: article

Abstract: A new family of benzylpotassium reagents, KBn′(1-Bn′) (Bn′ = p-iPrBn, p-tBuBn, p-NMe2Bn, p-SMeBn, m-OMeBn, o-OMeBn, 2-picolyl), was synthesized using a modified literature procedure and characterized by multinuclear NMR spectroscopy. Combining four equivalents of 1-Bn′ with UCl4 at low temperature in THF afforded the homoleptic uranium(IV) derivatives 2-Bn′ (2- p -iPr, 2- p -tBu, 2- p -NMe2, 2- p -SMe, 2- o -Picolyl, 2- m -OMe, 2- o -OMe). In addition to 1H NMR spectroscopic characterization, structural studies of five of these organouranium compounds (2- p -iPr, 2- p -tBu, 2- o -Picolyl, 2- m -OMe, 2- o -OMe) were performed, showing that in many cases the benzyl groups are coordinated in an η4-fashion, lending stability to these otherwise low-coordinate molecules. In the cases of U(o-OMeBn)4 (2- o -OMe) and U(2-picolyl)4 (2- o -Picolyl), heteroatom coordination to the uranium center is observed.

Source: Organometallics

DOI: 10.1021/acs.organomet.5b00212

Authors: Sara A. Johnson, John J. Kiernicki, Phillip E. Fanwick, Suzanne C. Bart

Institution: Purdue University West Lafayette

Language: English

Topic: Radioactive element chemistry and processing

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: National Science Foundation, Division of Chemistry