Highly Dispersed Ni2P Nanoparticles on N,P-codoped Carbon for Efficient Cross-Dehydrogenative Coupling to Access Alkynyl Thioethers
Tao Song, Peng Ren, Jianliang Xiao, Youzhu Yuan and Yong Yang*
An ultrafine Ni2P (a metal-rich interstitial phosphide compound) nanoparticles with narrow size distribution homogeneously dispersed on N,P-codoped carbon was developed for efficient synthesis of alkynyl thioethers via cross-dehydrogenative coupling (CDC) of terminal alkynes and thiols with base- and ligand-free using atmospheric air as oxidant under mild conditions. A remarkable catalytic performance with good compatibility of broad substrate scope and high stability are accomplished. Pyridinic N is identified as basic sites for facilitating activation of terminal alkyne via hydrogen bonding interaction and plays a key role for the success of this base- and ligand-free CDC reaction.