We report the improved direct access to red-emitting BOIMPY fluorophores (λ ≈ 600 nm) via a simple one-pot approach. Our method starts from easily available benzimidazole-2-carboxylic acids and not only greatly improves the overall yields but also saves both costly reagents and time. In addition, the method facilitates the synthesis of novel unsymmetrical BOIMPY motifs. Therefore, these BOIMPY scaffolds derived from the BODIPY core become more accessible for applications as fluorophores at the appealing red edge of the visible spectrum.

中文翻译：

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对称和不对称BOIMPY荧光团的一锅策略

我们报告了通过一种简单的一锅法改善了对红色发射BOIMPY荧光团（λ≈600 nm）的直接访问。我们的方法从容易获得的苯并咪唑-2-羧酸开始，不仅大大提高了总收率，还节省了昂贵的试剂和时间。另外，该方法促进了新颖的不对称BOIMPY基序的合成。因此，这些源自BODIPY核心的BOIMPY支架对于在可见光谱的吸引人的红色边缘上的荧光团更易于应用。