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设计了一个新型的以吖啶酮为母体的含有两个螺吡喃单元的双开关分子,通过路线优化最终以商业可得原料出发经过六步反应得到了目标化合物.该分子具有可逆的光致变色性质.另外,该分子的关环状态在甲醇和二氯甲烷溶液中显示出极强的对酸稳定性,在乙腈或乙腈/水混合溶液中则显示出酸致变色性能.但是通过对其变色过程的光谱研究发现在变色过程中并未出现由单开环到双开环状态的转变.通过理论计算模拟分析该双开关分子光致变色过程,表明该分子由双关环形式到单开环形式需要吸收7.2 kcal/mol的能量,要大于由单开环形式到双开环形式需要的能量(ΔG2=3.5 kcal/mol),因此该分子在外界刺激条件下更容易由双关环形式直接转变为双开环形式.
A novel acridone-based double-switch molecule containing two spiropyran units was designed and finally the target compound was obtained via route optimization in six steps starting from commercially available starting materials. The molecule has a reversible photoinduced In addition, the closed-loop state of the molecule shows very strong acid stability in methanol and dichloromethane solutions and shows acidochromism in acetonitrile or acetonitrile / water mixed solutions. However, The spectroscopic study of the discoloration showed that the transition from single open loop to double open loop did not appear during the discoloration process.The theoretical analysis of the photochromic process of the double-switch molecule indicated that the molecule was converted from double-closed to single open-loop The energy required to absorb 7.2 kcal / mol is greater than the energy required for a single open-loop to double open-loop form (ΔG2 = 3.5 kcal / mol), so that the molecule is more easily converted from double-closed to double-open under external stimuli Ring form.