Charge-cumulated hetarenes โ1. (Pyrimidi
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Andreas Schmidt; Annemarie Hetzheim
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Article
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1997
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Elsevier Science
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French
โ 322 KB
Nucleophilic substitution on 2,4,6-trichloropyrimidine (1) with 4-dimethylaminopyfidine, 1-methylimidazole and 4-(pyrrolidin-1-yl)pyridine forms the (pyrimidin-2,4,6-triyl)-tris-hetarenium salts 3, 4 and 5, respectively. Whereas the chlorides 3a, 4a, and 5a are hygroscopic, stabilization can be achi