Synthesis and photochromic properties of methoxy substituted 2,2-diaryl-2H-naphtho[1,2-b]pyrans
A series of methoxy-substituted 2,2-di(4-methoxyphenyl)-2H-naphtho[1,2-b]pyrans has been synthesised from 3-alkoxycarbonyl-1-naphthols and 1,1-di(4-methoxyphenyl)prop-2-yn-1-ol. The influence of the methoxy group on the wavelength of maximum absorption an
Gabbutt, Christopher D.,Hepworth, John D.,Heron, B. Mark,Thomas, David A.,Kilner, Colin,Partington, Steven M.