Technical Notes:

1.Synthesis of dibenzofurans via palladium-catalyzed phenol-directed C-H activation/C-O cyclization.

2. Nickel-catalyzed intermolecular 2+2 cycloaddition of conjugated enynes with alkenes.

3.CO2 as a C1-building block for the catalytic methylation of amines.

4.Copper-catalyzed hydroboration of carbon dioxide .

5.Linear-selective hydroarylation of unactivated terminal and internal olefins with trifluoromethyl-substitutedarenes.

6.Nickel-ca talyzed dehydroarylation cross- coupling: Direct transformation of aldehydes into esters and amides.

7.Ligand-controlled regiodivergent Cu-catalyzed aminoboration of unactivated terminal alkenes.

8.Highly regioselective indoline synthesis under nickel/photoredox dual catalysis.

9.Catalytic activation of carbon-carbon bonds in cyclo pentanones.

10.Au(lII)-aryl intermediates in oxidant-free C-N and C-0 cross-coupling catalysis .

11. lron-catalyzed cross-coupling reactions of arylmagnesium reagents with aryl chlorides and tosylates.

12. Tertiary and quaternary carbon formation via Gallium-Catalyzed nucleophilic addition of organoboronates tocyclopropanes.

13. A tethering directing group strategy for ruthenium-catalyzed intramolecular alkene hydroarylation.