Michael Oelgemöller

Photochemical Acylation of 1,4-Naphthoquinone with Aldehydes Under Continuous-Flow Conditions

Madyan A. Yaseen & Michael Oelgemöller · Organics · 2025

A series of photoacylations of 1,4-naphthoquinone with various aldehydes and using Pyrex-filtered UVB light was conducted under continuous-flow conditions. Acetone served as a triplet photosensitizer and convenient solvent that kept all materials in solution and could be easily r...

Open access Research Article 10.3390/org6010009

Evaluation of Natural Dye Extracts from African Plants for the Photooxygenation of α-Terpinene to the Anthelmintic Ascaridole

Chinyere Chidimma Enyi, Gloria Ihuoma Ndukwe, Godswill Kuta Fekarurhobo & Michael Oelgemöller · Organics · 2026

In this study, the singlet oxygen photosensitization potential of three natural African plant extracts was investigated using the photooxygenation of α-terpinene (1). Utilizing visible light, the Carpolobia lutea extract achieved high conversions towards the anthelmintic ascarido...

Open access Research Article 10.3390/org7010003