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A Pd-catalyzed oxidative silylation of simple olefins with hexamethyldisilane to give allylsilanes has been achieved using molecular oxygen as the sole oxidant. The reaction provides a useful protocol to access synthetically useful allylsilanes from easily accessible simple olefins and hexamethyldisilane without using any oxidants other than O2.

Au25(SC2H4Ph)18 nanoclusters have high catalytic activity for hydroamination of terminal alkynes. This reaction proceeds under O2 or air. The presence of molecular oxygen has a profound effect on the Au25(SC2H4Ph)18 reactivity. The catalysts can be separated from the mixture after the reaction and reused.

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