Monodispersed nickel phosphide nanocrystals (NCs) with different phases were successfully synthesized. The Ni5P4 NCs, with a solid structure, exhibited higher catalytic activity than the Ni12P5 and Ni2P NCs.
Unactivated CH3 groups in 2‐oxazolines are oxidized by inexpensive oxidants, such as tert ‐butyl peroxyacetate and lauroyl peroxide, in the presence of a catalytic amount of Pd(OAc)2. Carboxylic anhydrides are essential for both the oxidation of the PdC bonds and regeneration of Pd(OAc)2. The use of [D6]Ac2O as the solvent shows that the acetyl group incorporated into the product is from acetic anhydride rather than the oxidant (see scheme).
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