Mitsunobu Nakamura, the late Reizo Dohno and Tetsuro Majima
1,1′-Binaphthyl is formed by photoinduced electron-transfer reactions of tri-1-naphthyl phosphate and di-1-naphthyl methylphosphonate sensitised by 9,10-dicyanoanthracene in MeCN, while no reaction occurs in the case of mono-1-naphthyl and di- or tri-phenyl esters.