2-Cyanobenzothiazoles (CBTs) are useful building blocks for: 1) luciferin derivatives for bioluminescent imaging; and 2) handles for bioorthogonal ligations. A particularly versatile CBT is 6-amino-2-cyanobenzothiazole (ACBT), which has an amine handle for straight-forward derivatisation. Here we present an economical and scalable synthesis of ACBT based on a cyanation catalysed by 1,4-diazabicyclo[2.2.2]octane (DABCO), and discuss its advantages for scale-up over previously reported routes.
2-氰基苯并噻唑(CBTs)是用于:1)生物发光成像的荧光素衍生物;和2)生物正交连接的处理。一种特别多才多艺的CBT是6-氨基-2-氰基苯并噻唑(ACBT),它具有氨基处理,便于衍生化。在这里,我们介绍了一种基于由1,4-二氮杂双环[2.2.2]辛烷(DABCO)催化的氰化反应的ACBT的经济和可扩展合成,并讨论了与先前报道的途径相比的规模化优势。