Fig. 2: Substrate scope.
From: A facile synthesis of α,β-unsaturated imines via palladium-catalyzed dehydrogenation
Standard conditions: a mixture of N-fluoro-sulfonamide (0.20 mmol), Pd(OAc)2 (0.02 mmol), DPEPhos (0.022 mmol), HOAc (0.20 mmol), and BQ (0.20 mmol) in dioxane (1.0 mL) was stirred under air at 70 °C for 15 min. Isolated yields are shown. aE/Z ratio of the C–N double bond. bAt 50 °C for 0.5 h. cFor 0.5 h. DPEPhos, bis[2-(diphenylphosphino)phenyl]ether; BQ, 1,4-benzoquinone; Ts, tosyl; Bz, benzoxyl; Bn, benzyl; TBS, t-butyldimethylsilyl.
