I2/TBHP promoted isocyanide insertion cyclization reaction for the synthesis of quinazolin fused benzoimidazole as a selective methanol detection probe
An efficient I2/TBHP promoted isocyanide insertioncyclization reaction for the synthesis of quinazolines-fused benzoimidazole was reported. The synthesized compounds have a unique potential to use as a selective solvatochromic fluorescence probe for methanol detection from other solvents, especially EtOH. Introducing a simple one-step method and using a more acceptable iodine molecule instead of expensive
报道了一种有效的 I 2 /TBHP 促进的异氰化物插入环化反应,用于合成喹唑啉类稠合苯并咪唑。合成的化合物具有独特的潜力,可用作选择性溶剂化显色荧光探针,用于检测其他溶剂(尤其是乙醇)中的甲醇。引入简单的一步法并使用更可接受的碘分子代替昂贵的过渡金属催化剂是该策略最重要的优势。
Heterocyclic synthesis via a tandem aza-Wittig reaction/heterocumulene-mediated annulation reaction. New methodology for the preparation of quinazoline derivatives.
作者:Pedro Molina、Mateo Alajarín、Angel Vidal
DOI:10.1016/s0040-4039(00)82131-0
日期:1988.1
The aza-Wittig reaction of iminophosphoranes derived fromN-substituted o-azidobenzamides or 2-(o-azido) phenyl benzimidazolewith isocyanates, carbon dioxide or carbon disulphide, lead tofunctionalized 4(3H)-quinazolinones and benzimidazo [1,2-c]quinazolines respectively.