Selective partial reduction of esters using group iv transition metal catalysts and uses thereof
AssigneeBaylor University
InventorsLiela A. Romero, Rebecca A. Kehner, Weiheng Huang, Jack Russo
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Abstract
Methods described herein relate to a partial reduction of esters to aldehydes or nitrogen-containing products facilitated by Group IV transition metal catalysts, using hydrosilanes as the reductant. The method allows the product to be preserved at the aldehyde oxidation level rather than over-reduction to the corresponding alcohol and can result in the formation of value-added recycled monomers. Methods described herein can be used for the direct catalytic chemical upcycling of polyester plastic waste through depolymerization transformations.
Claims19
A method for partial reduction of an ester to an aldehyde or nitrogen-containing compound, comprising:
- preparing a reaction mixture comprising the ester, a Group IV metal catalyst, a silane, and an amine;
- allowing the reaction mixture to undergo a partial reduction reaction;
- and
- isolating an aldehyde or nitrogen-containing compound from the reaction mixture.
A method for depolymerization of a polyester to an aldehyde or nitrogen-containing compound, comprising:
- preparing a reaction mixture comprising the polyester, a Group IV metal catalyst, a silane, and an amine;
- allowing the reaction mixture to undergo a partial reduction reaction;
- and
- isolating an aldehyde or nitrogen-containing compound from the reaction mixture.
Dependencies are inferred from the claim text.