某些芳乙烯基取代的(口恶)唑烷并二氢吲哚具有光(热)和电致变色性质,在非银盐成像等领域有应用价值.芳基吡唑啉是较强的电子给体,若用它替换上述化合物中的芳基,可能对其光谱及变色性产生有益的影响。为此,我们用Vilsmeier反应将3种芳基吡唑琳甲酰化得到醛 Some of the aryl vinyl-substituted oxazolidine indolines have light (heat) and electrochromic properties and have applications in non-silver salt imaging, etc. Arylpyrazolines are strong electron Donors, if used to replace the aryl groups in the above compounds, may have a beneficial effect on their spectra and discoloration. For this purpose, we formylated the three aryl pyrazoles using the Vilsmeier reaction