| 摘要 |
Photochromic 2,2-diaryl-2H-naphtho(1,2-b)pyrans (I) and 3,3-diaryl-3H naphtho(2,1-b)pyrans (II) are new. Photochromic 2,2-diaryl-2H-naphtho(1,2-b)pyrans of formula (I) and 3,3-diaryl-3H-naphtho(2,1-b)pyrans of formula (II) are new: R5-R10 = H, OH, 1-10 C alkyl, 1-6 C alkoxy, 5-7 C cycloalkyl, phenyl, benzyl, allyl, 1-6 C alkoxy-(1-4 C)-alkyl, mono- or di- asterisk (1-6 C)-alkyl-substituted phenyl, furyl, thienyl, mono- or di-(1-6 C)-alkoxy-substituted phenyl, 1-6 C haloalkyl or F, Cl or Br; R5 not = H; X and/or X' = mono-, di- or trisubstituted phenyl or naphthyl, with at least one A or A' and optionally Z substituent(s); one of X and X' may also = phenyl or naphthyl, optionally mono-, di- or trisubstituted by Z; A = a cyclic amino substituent , e.g. morpholine, piperidine, pyridine, pyrrole, pyrazole, pyrazolidine, piperazole, indoline, imidazole, phenothiazine, phenoxazine, phenazine, acridine and carbazole; A' = an amino substituent with low or no basicity, e.g. aminodiphenyl, in which 1 or 2 phenyl rings may be mono-, di- or trisubstituted by Z Compounds (I); A = morpholine, piperidine, 1-indolinyl, pyrrolidyl, 1-imidazolidyl, 2-imidazolin-1-yl, 2-pyrazolidyl, pyrazolinyl and 1-piperazinyl are excluded. |
