Synthese von 2,4-Diamino-thieno[2,3-d]py
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Helmut Link
📂
Article
📅
1990
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John Wiley and Sons
🌐
German
⚖ 424 KB
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Synthesis of 2,4‐Diamino‐thieno[2,3‐__d__]pyrimidines Condensation of 2‐aminothiophene‐3‐carbonitrile (4) with guanidine or sequential addition of CS~2~ and NH~3~ to 4 provides 2,4‐diaminothieno[2,3‐__d__]pyrimidine (7). This compound yields, after sequential addition of __sec__‐BuLi and either [3‐