The effect of a sulphur bridge on the photochromic properties of indeno-fused naphthopyrans
作者:Paulo J Coelho、Maria A Salvador、M.Manuel Oliveira、Luis M Carvalho
DOI:10.1016/j.tet.2004.01.034
日期:2004.3
The synthesis of four new 2,2-diphenyl-2H-naphtho[1,2-b]pyrans with a fused indeno group at the f face and a sulphur junction between the 2,2-phenyl groups is described. The photochromic properties in solution of these novel compounds were investigated under continuous irradiation. Compared to known indeno-fused naphthopyrans, these new compounds showed a significant bathochromic shift in the spectra
描述了四个新的2,2-二苯基-2 H-萘并[1,2- b ]吡喃的合成,在f面上带有稠合的茚基,并且在2,2-苯基之间有一个硫键。在连续照射下研究了这些新型化合物在溶液中的光致变色性质。与已知的茚基稠合萘并吡喃相比,这些新化合物在开环形式的光谱中显示出显着的红移,闭环动力学更快,并且着色性预期降低。