<sup>13</sup>C-NMR. Spectral Differences between Corresponding Methyl Esters, Phenyl Esters and 2-Substituted Chromones
作者:Urs Séquin
DOI:10.1002/hlca.19810640824
日期:1981.12.16
The 13C-NMR. spectra of 2-substitutedchromones (3) are compared with the data of the analogous methyl and phenylesters (1 and 2). The chemical shift differences found are most prominent for the C-atoms in β-position to the ester carbonyl and chromone C(2), respectively. These shift differences are discussed in terms of conformational differencesbetween the esters 1 and 2 and the analogous chromones
[EN] SUBSTITUTED 5,6-RING-FUSED NAPHTHOPYRAN COMPOUNDS<br/>[FR] COMPOSÉS DE NAPHTOPYRANE SUBSTITUÉ À CYCLE CONDENSÉ EN POSITION 5,6
申请人:TRANSITIONS OPTICAL INC
公开号:WO2014164046A1
公开(公告)日:2014-10-09
The present invention relates to naphthopyran compounds that include at least one compound represented by the following Formulas (I), (II), and (III): With reference to Formulas (I), (II), and (III), there is the proviso that: (i) at least one R1 is a group L; and/or (ii) B and/or B' is substituted with at least one group L. The group L can be described as a lengthening group. The present invention also relates to photochromic-dichroic naphthopyran compounds and photochromic-dichroic articles containing such compounds.
本发明涉及萘吡喃化合物,其中至少包括以下式(I)、(II)和(III)所代表的化合物:参照式(I)、(II)和(III),有以下规定:(i) 至少一个R1是一个L基团;和/或 (ii) B和/或B'被至少一个L基团取代。L基团可被描述为一个延长基团。本发明还涉及光致变色-双折射萘吡喃化合物和含有这种化合物的光致变色-双折射物品。
PHOTOCHROMIC MATERIALS THAT INCLUDE 6-AMINO SUBSTITUTED INDENO-FUSED NAPHTHOPYRANS
申请人:Chopra Anu
公开号:US20120053341A1
公开(公告)日:2012-03-01
The present invention relates to photochromic materials that include certain indeno-fused naphthopyrans. The indeno-fused naphthopyrans have an amino group (e.g., a piperidino or morpholino group) bonded to the 6-position and an optional halo group (e.g., fluoro) bonded to the 11-position thereof. The photochromic materials of the present invention may have a closed-form electromagnetic radiation absorption spectrum that is shifted to longer wavelengths (e.g., wavelengths of greater than 390 nm), relative to comparable photochromic materials. The present invention also relates to optical elements, such as eyeglasses, that include the photochromic materials of the present invention.
This invention relates to novel naphthopyrans having an oxygen-containing heterocyclic group F annelated on the i, j, or k side of the naphthopyran ring, having certain substituents at the 2, 5, and 6 positions of the naphthopyran ring. These naphthopyrans may have the formula (I) presented below:
1
These compounds (I) have interesting photochromic properties. Also related to this invention are host materials that contain such naphthopyran compounds, and articles such as ophthalmic lenses or other plastic transparencies that incorporate the naphthopyran compounds.
The present invention relates to photochromic compounds, such as thienochromene compounds represented by the following Formulas (la) and/or (lb). The present invention also relates to photochromic compositions and articles containing one or more such photochromic thienochromene compounds.