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A versatile π‐extension reaction was developed based on the three‐component cross‐coupling of aryl halides, 2‐haloarylcarboxylic acids, and norbornadiene. The transformation is driven by the direction and subsequent decarboxylation of the carboxyl group, while norbornadiene serves as an ortho‐C−H activator and ethylene synthon via a retro‐Diels–Alder reaction. Comprehensive DFT calculations were performed...
1,2‐Diborylarene konnten durch Zink‐katalysierte C‐X‐ und C‐H‐Borylierung von Arylhalogeniden bei milden Reaktionsbedingungen unter Verwendung von B2pin2 (pin=OCMe2CMe2O) synthetisiert werden. Die katalytische C‐H‐Bindungsaktivierung erfolgt in ortho‐Position zum Halogensubstituenten, sofern diese Stelle zugänglich ist, oder in meta‐Position, falls die ortho‐Position substituiert ist. Der Prozess...
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