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- W2950341221 abstract "A new divergent and efficient synthesis of substituted 2-aminoimidazoles 5 and 6 has been developed starting from the readily available 2-aminopyrimidines 1 and α-bromocarbonyl compounds 2, using conventional heating or microwave irradiation. Thus, the cleavage of 1,2,3-substituted imidazo[1,2-a]pyrimidin-1-ium salts 4 with hydrazine or secondary amines led to 1,4,5-trisubstituted 2-aminoimidazoles 5, when the hydrazinolysis of 2-hydroxy-2,3-dihydro-1H-imidazo[1,2-a]pyrimidin-4-ium salts 3, followed by a novel Dimroth-type rearrangement, resulted in formation of 2-amino-1H-imidazoles 6. The relevant pathway of transformations was identified by characterization of the intermediates." @default.
- W2950341221 created "2019-06-27" @default.
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- W2950341221 date "2008-07-26" @default.
- W2950341221 modified "2023-10-17" @default.
- W2950341221 title "A Divergent Synthesis of Substituted 2-Aminoimidazoles from 2-Aminopyrimidines" @default.
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- W2950341221 doi "https://doi.org/10.1021/jo8008758" @default.
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