Technical Notes:

1. Visible light-promoted synthesis of spiroepoxy chromanone derivatives via a tandem oxidation/radical/cyclization/epoxidation process.

2. Visible light-promoted, asymmetric cross-dehydrogenative coupling of tertiary amines to ketones by synergistic multiple catalysis.

3. Photoredox catalysis enabled alkylation of alkenyl carboxylic acids with N-(acyloxy)phthalimide via dual decarboxylation

4. AlkyI esterification of vinylarenes enabled by visible -light-induced decarboxylation.

5. Photoredox- catalyzed C-H arylation of internal alkenes to tetrasubstituted alkenes .

6. Ru/Ni catalytic photoredox c (sp')-C(sp') cross-coupling of alkyl sulfinate salts and aryl halides.