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- W2088293491 abstract "The reaction of N-substituted cyclic amines with 2,4-dichloroquinazoline 2 and 2,4-dichloro-5-methyl-pyrimidine 3b afforded 2-amino-4-chloroquinazolines and 2-amino-4-chloro-5-methylpyrimidines, respectively. However, the reaction of these amines with 2,4-dichloropyrimidine 3a afforded not only 2-amino-4-chloropyrimidines but also the isomeric 4-amino-2-chloropyrimidines. The regio-selectivity of these reactions was considered to be determined by the steric nature of the substrates 2, 3a, and 3b." @default.
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- W2088293491 date "1992-01-01" @default.
- W2088293491 modified "2023-10-16" @default.
- W2088293491 title "Reaction of N-substituted cyclic amines with 2,4-dichloroquinazoline, 2,4-dichloropyrimidine, and its 5-methyl derivative" @default.
- W2088293491 cites W2006932566 @default.
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- W2088293491 doi "https://doi.org/10.1039/p19920000919" @default.
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