Visible-light triggered quinone trimethyl locks are reported as a general design for long-wavelength photoremovable protecting groups for alcohols and amines. Intramolecular photoreduction unmasks a reactive phenol that undergoes fast lactonization to release alcohols and amines. Model substrates are released in quantitative yield along with well-defined, colorless hydroquinone byproducts. Substituent
据报道,可见光触发的醌三甲基锁是醇和胺的长波长光可去除保护基团的通用设计。分子内光还原揭示了一种反应性
苯酚,该
苯酚经历快速内酯化以释放醇和胺。模型底物以定量产率与明确定义的无色
对苯二酚副产物一起释放。醌核的取代基修饰允许吸收 400 至 600 nm。