Metal-free synthesis of biarenes via photoextrusion in di(tri)aryl phosphates

Abstract

A metal-free route for the synthesis of biarenes has been developed. The approach is based on the photoextrusion of a phosphate moiety occurring upon irradiation of biaryl- and triaryl phosphates. The reaction involves an exciplex as the intermediate and it is especially suitable for the preparation of electron-rich biarenes.

Sustainable and highly controlled aryl couplings revealed by systematic assessment of photoactivatable linkers

“…It has been reported that phenyl phosphates generate biphenyls upon irradiation. 20 This photoreaction proceeds via a singlet-excited intramolecular excimer 21 and involves radicals. 22 We first synthesized phosphinic amide 1q from PhPOCl 2 and a benzyl amine.…”

Exploitation of a New Nucleating Agent by Molecular Structure Modification of Aryl Phosphate and Its Effect on Application Properties of the Polypropylene

“…Aryl phosphate (AP), as one of high-performance α-nucleating agents, can significantly change the crystallization behavior and reduce the spherulite size of PP by their low loadings, thus reinforcing the crystallinity and crystallization rate of PP, and effectively promoting the mechanical properties of PP further. Many studies about the modification of PP by AP nucleating agents have been reported, focusing on raising the density of crystal nucleus, reducing the spherulite size, improving the optical performance, shortening the processing cycle, and enhancing the charge storage property and the mechanical properties [ 26 , 27 , 28 ]. Min G [ 29 ] et al prepared composite nucleating agents using a silicon nanoparticle-modified sodium phosphate nucleating agent (NA-11) to improve the mechanical property and crystallization behavior of PP.…”