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Single-Step Catalytic Upgrading of Microalgae Biomass

A direct catalytic upgrading on as-cultivated microalgae biomass is demonstrated. Via CO-free alkoxycarbonylation of the contained lipids with the use of formates, diesters were produced in high conversion and selectivity from monounsaturated fatty acids from Phaeodactylum tricornutum microalgae. Via this procedure, extraction and functionalization occur in one step, circumventing the need for separate workup procedures of the biomass. The products are valuable building blocks for renewable polyester materials.