Boron‐based dyes are attractive synthetic targets due to their large variability of absorption and emission wavelengths. Through Pictet–Spengler cyclizations, followed by oxidation, π‐extended boroquinols have been synthesized. During optimization of the reaction conditions, an unusual dearylation has been found and mechanistically investigated. For two of the synthesized boroquinols, mechanochromic
硼基
染料因其吸收和发射波长的较大差异而成为有吸引力的合成靶标。通过Pictet–Spengler环化反应,然后进行
氧化,合成了π扩展的
硼喹诺醇。在优化反应条件的过程中,发现了不寻常的
脱芳基并对其进行了机理研究。对于两种合成的
硼喹诺醇,在研磨时发现了具有高达50 nm的红移的机械变色效应。