Lithium alkyl aluminates as alkyl transfer reagents

US11384102B2 · kind B2 · utility

Assignee

• UMICORE AG & CO. KG · DE

Inventors

• Susanne HERRITSCH · Marburg, DE
• Joerg Sundermeyer · Marburg, DE

Key dates

• Filing date: Nov 28, 2019
• Grant date: Jul 12, 2022
• Expiry date: Nov 28, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C16/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to lithium alkyl aluminates according to the general formula Li[AlR4] and to a method for preparing same, starting from LiAlH4 and RLi in an aprotic solvent. The invention also relates to compounds according to the general formula Li[AlR4] which can be obtained using the claimed method, and to the use thereof. The invention also relates to the use of a lithium alkyl aluminate Li[AlR4] as a transfer reagent for transferring at least one radical R to an element halide or metal halide and to a method for transferring at least one radical R to a compound E(X)q for preparing a compound according to the general formula E(X)q-pRp, where E=aluminium, gallium, indium, thallium, germanium, tin, lead, antimony, bismuth, zinc, cadmium, mercury, or phosphorus, X=halogen, q=2, 3 or 4, and p=1, 2, 3 or 4. The invention also relates to compounds which can be obtained using such a method, to the use thereof, and to a substrate which has an aluminium layer or a layer containing aluminium on one surface.