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A palladium‐catalyzed asymmetric OH insertion reaction was developed. Palladium complexes with chiral spiro bisoxazoline ligands promoted the insertion of α‐aryl‐α‐diazoacetates into the OH bond of phenols with high yield and excellent enantioselectivity under mild reaction conditions. This palladium‐catalyzed asymmetric OH insertion reaction provided an efficient and highly enantioselective method...
Unter die Haut: Ein im nahen Infrarot fluoreszierendes Protein (iRFP) zeigt überlegene Eigenschaften in der photoakustischen Gewebetomographie. Bei einer Gewebetiefe von 4 mm im lebenden Tier werden laterale und axiale Auflösungen von 280 bzw. 75 μm erzielt. Dies ermöglicht volumetrische Aufnahmen eines Tumors (siehe Bild), wodurch die räumlich aufgelöste Verfolgung der Tumorentwicklung möglich wird.
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