Synthesis and Photoluminescent Properties of Violet Emitting 5,6-Diphenylfuro[2,3-d]pyrimidine Derivatives.
✍ Scribed by Eun Jee Hwang; Chan Seong Cheong; Hyoyoung Lee; Sang Woo Lee; In Tae Kim; So Ha Lee
- Publisher
- John Wiley and Sons
- Year
- 2005
- Weight
- 15 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0931-7597
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## Abstract magnified image A series of new 2,4‐diaminothieno[2,3‐__d__]‐ and 2,4‐diaminopyrrolo[2,3‐__d__]pyrimidine derivatives were synthesised. Reaction of 2‐amino‐4,6‐dichloropyrimidine‐5‐carbaldehyde (**1**) with ethyl mercaptoacetate, methyl __N__‐methylglycinate or ethyl glycinate afforded
## Abstract Pyrazolo‐[3,4‐__d__]pyrimidine‐4,6‐diones **5** and pyrazolo[4,3‐__d__]pyrimidine‐5,7‐diones **7** were synthesized by Curtius rearrangement of pyrazolic mono‐esters **2** and **3** followed by hetero‐cyclization __via__ the ureas derivatives **4** and **6** under alkaline conditions.