The haem prosthetic group of lactoperoxidase can be prepared from the enzyme in high yield by reductive cleavage with mercaptoethanol in 8 M-urea under mild conditions. The product yields porphyrins, after removal of iron, which show visible spectroscopic properties similar to protoporphyrin but are considerably more polar. In the presence of iodoacetamide, a different product is obtained by re...

Ring cleavage occurred when 1,2,4-triazino-1,2,4-triazines (3), (4) and (5) were treated with concentrated hydrochloric acid to yield N-substituted triazines (7) and (8). These confirm the given configuration assigned to the isomeric triazinotriazines. 6-Methyl-2-phenyl-7H-oxazolo [3,2-b][1,2,4]-triazin-7-one (9) underwent ring cleavage on treatment with sodium alkoxide to afford 3-alkoxy-1...

Bio-based and biodegradable polymers are essential for a sustainable society. Cellulose is the most abundant biopolymer on earth; however, derivatization necessary its processing, which slows down biodegradability dramatically, e.g. used cigarette filters made from cellulose acetate barely biodegradable. We developed first reversible modification of cellulose, allows processing guarantees full ...

We report a novel example of electro-mediated photoredox catalysis (e-PRC) in the reductive cleavage C(sp3)?O bonds phosphinated alcohols to alkyl carbanions. As well as deoxygenations, olefinations are reported which E-selective and can be made Z-selective tandem reduction/photosensitization process where both steps photoelectrochemically promoted. Spectroscopy, computation, catalyst structura...