Nickel-Catalyzed Csp-Csp Bond Formation via C-F Bond Activation.

A nickel-catalyzed cross coupling of aryl fluorides via C-F bond activation has been developed. The alkylation method allows selective replacement of aryl fluorides by alkyl groups and enables the synthesis of diverse and otherwise difficult to access scaffolds in good yields.

Brønsted Base Assisted Photoredox Catalysis: Proton Coupled Electron Transfer for Remote C-C Bond Formation via Amidyl Radicals.

The synthesis of alkyne- and alkene-decorated lactams has been achieved through a photoredox-initiated radical cascade reaction. The developed Brønsted base assisted, photoredox-catalyzed, intramolecular 5-exo-trig cyclization/intermolecular radical addition/elimination reaction provides facile access to functionalized γ-lactams, with good functional group tolerance and high yields.

Highly diastereo- and enantioselective silver-catalyzed double [3+2] cyclization of α-imino esters with isocyanoacetate.

Presented herein is a new complexity-generating method in which both functionalities of α-imino esters undergo stereoselective cyclization with isocyanoacetates to produce directly linked oxazole-imidazolines, which can be transformed into highly functionalized α,β-diamino esters and imidazolinium salts in high diastereo- and enantiopurity.