A new one pot two-step domino protocol for the efficient synthesis of novel fluorescent benzo[a]phenazine fused derivatives has been developed. The synthesis was achieved by reacting 2-hydroxynaphthalene-1,4-dione, ortho-phenylenediamines, aromatic aldehydes and cyclic 1,3-dicarbonyl compounds in the presence of a catalytic amount of p-TSA in PEG-400 at 70 °C. The structural assignment has been unambiguously confirmed by X-ray analysis. The present finding provides an efficient and promising synthetic strategy for the synthesis of libraries with functional group diversity.
已开发出一种新的单锅两步多米诺协议,用于高效合成新型荧光
苯并[a]吩嗪融合衍
生物。该合成过程通过在70°C下,以P
EG-400为溶剂,使用催化量的
对甲苯磺酸(p-
TSA),将2-羟基
萘-1,4-二
酮、
邻苯二胺、芳香醛和环状1,3-二羰基化合物反应实现。结构鉴定已通过X射线分析明确确认。这一发现为合成具有功能团多样性的化合物库提供了一种高效且有前景的合成策略。