The present invention relates to intermediate compounds represented by the following Formula (I-A),
The intermediate compounds of the present invention, such as represented by Formula (I-A), can be used to prepare photochromic compounds, such as photochromic fused ring indenopyran compounds, including but not limited to photochromic fused ring indeno-naphtho-pyran compounds.
本发明涉及以下式(I-A)所代表的中间化合物,
本发明的中间化合物,如由式(I-A)所代表的,可用于制备光致变色化合物,例如光致变色融合环
吲哚吡喃化合物,包括但不限于光致变色融合环
吲哚萘吡喃化合物。