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7
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26844537872
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39349093757
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The formamide formation step was crucial and only the reported conditions were successful
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The formamide formation step was crucial and only the reported conditions were successful.
-
-
-
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10
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39349116871
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Every attempt to employ different leaving groups failed too
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Every attempt to employ different leaving groups failed too.
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11
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23
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39349107130
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7 have been separated and independently fully characterized in some cases (7a,b,g)
-
Diastereoisomers of 7 have been separated and independently fully characterized in some cases (7a,b,g). Diastereoisomers of 7d,e,f could not be separated and therefore they have been characterized as a mixture, although an accurate determination of the diastereomeric ratio was always possible (see the Supporting Information).
-
Diastereoisomers of 7d,e,f could not be separated and therefore they have been characterized as a mixture, although an accurate determination of the diastereomeric ratio was always possible (see the Supporting Information)
-
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Diastereoisomers of1
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24
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0032855073
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and references therein. See, for example
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39349106067
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Working at a lower temperature required a noticeably longer reaction time and furnished 7a with less satisfactory yield and no improvement with respect to the diastereomeric ratio.
-
Working at a lower temperature required a noticeably longer reaction time and furnished 7a with less satisfactory yield and no improvement with respect to the diastereomeric ratio.
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