Shannon S. Stahl

Assessing biological degradation of non-hydrolysable synthetic polymers

Cp2TiCl2-Catalyzed Reductive Methylidenation of Alkyl Ketones with CH2Br2

Direct methylidenation of carbonyl compounds represents an appealing route to terminal alkenes. Existing methods for this transformation typically rely on stoichiometric phosphorus ylides (methylene Wittig) or organotitanium complexes (Tebbe or Petasis reagents). Here, we report a Cp2TiCl2-catalyzed method that uses...

Expanding the catabolic capacity of Pseudomonas putida to acetovanillone, 5-carboxyvanillate, and vanillyl glyoxylate for muconate production from kraft lignin-derived aromatics

The pulp and paper industry produces large volumes of condensed kraft lignin, which is challenging to convert to single chemical products. For this purpose, tandem chemical depolymerization and bioconversion to a single atom-efficient product is a potentially promising strategy. In this study, we conducted copper-catal...

Metabolic engineering of Rhodococcus aromaticivorans RHA1 for muconic acid production from lignin.

Lignin has potential as a sustainable feedstock to replace fossil fuels in chemical manufacturing. The coupling of chemical fractionation and biocatalysis has emerged as a promising technology to realize this potential. In this process, chemocatalytic fractionation of biomass or lignin yields heterogeneous mixtures of...