Songlei Zhu

Effective Synthesis of 7‐Amino‐6‐cyano‐5‐aryl‐5H‐pyrano[2,3‐d]pyrimidine‐2,4(1H,3H)‐diones Under Microwave Irradiation

Abstract A series of 7‐amino‐6‐cyano‐5‐aryl‐5H‐pyrano[2,3‐d]pyrimidine‐2,4(1H,3H)‐diones were synthesized by the reaction of arylidenemalononitrile with barbituric acid under microwave irradiation without catalyst with shorter reaction time and higher yields.

A Novel Reaction of Aldeoxime with Dimedone Under Microwave Irradiation

Abstract The reaction of aldeoxime with dimedone and ammonium acetate in glycol under microwave irradiation has been carried out, elimination and cyclization happened and acridine derivatives were obtained. The structure of the product has been thoroughly studied by x‐ray crystallographic analysis.

The Reaction of Aromatic Dialdehyde with Dimedone Under Microwave Irradiation

Abstract The bis‐oxanthene, bis‐polyhydroacridine, and bis‐N‐hydroxylacridine derivatives were obtained by the reaction of aromatic dialdehyde with dimedone in ethylene glycol under microwave irradiation. The reaction time was shot and the yield was high.

A synthesis of 10-aryl-2,7-dimethyl-4,5-dioxo-3,6,9- trioxa-3,4,5,6,9, 10-hexahydroanthracene catalysed by KF-alumina

A series of 10-aryl-2,7-dimethyl-4,5-dioxo-3,6,9- trioxa-3,4,5,6,9,10-hexaanthracenes were prepared by the reaction of aromatic aldehydes with triacetic acid lactone in ethylene glycol catalysed by KF-alumina.

Synthesis of 2-amino-3-ethoxycarbonyl-4-aryl-4H,5H-pyrano- [3,2-c]benzopyran-5-one

A series of 2-amino-3-ethoxycarbonyl-4-aryl-4H,5H-pyrano-[3,2-c]benzopyran-5-ones have been were synthesised by the reaction of 4-hydroxycoumarin, an aromatic aldehyde and ethyl cyanoacetate under microwave irradiation with short times and high yields.

Synthesis of Bis‐1,4‐Dihydropyridine Derivatives

Abstract A series of bis‐1,4‐dihydropyridine derivatives were synthesized by the reaction of p‐phenylenedialdehyde or m‐phenylenedialdehyde and active methylene compounds.