Bimolekulare Radikalbildung durch H‐Transfer, 7. Katalyse der Transferhydrierung von α‐Methylstyrol durch 9,10‐Dihydroanthracen mit 7H‐Benz[de]anthracen

Bimolecular Formation of Radicals by H‐Transfer, 7[1]. — Bimolecular Formation of Radicals via H‐Transfer with Catalysis by 7H‐Benz[de]anthracene The transfer hydrogenation of α‐methylstyrene (2) by 9,10‐dihydroanthracene (1) (DHA) with 7H‐benz[de]anthracene (8) as a catalyst proceeds already at 210–260°C. Isotopic labeling, ESR spectroscopy, radical clock experiments, solvents effects, and thermochemical calculations support the postulated stepwise radical mechanism induced by bimolecular formation of radicals.