Carbon—carbon bond formation using manganese(iii) acetate as an electrochemical mediator
摘要:
Anodic oxidation in a solution containing a variety of olefins and a small amount of Mn(OAc)2.4H2O brought about Mn+3-mediated carbon-carbon bond formation, such as efficient carboxymethylation of styrene derivatives to the corresponding gamma-aryl-gamma-butyrolactones, and selective coupling of active methylene compounds with non-activated monoolefins, unconjugated dienes or 5-arylpent-1-enes.
We here report the photoinduced Cu-catalyzed cyanoalkylation of electron-deficient alkenes by using alkylbromides as alkylation reagents. In the reactions, 1°, 2°, and 3° unactivated alkylbromides with various sensitive functional groups were well tolerated with good yields. Notably, terminal and internal alkenes, as well as alkene-containing peptides, were all tolerated well.