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We have described a convenient regioselective one-pot approach to pyrazolo[1,5-a]- and imidazo[1,2-a]pyrimidine derivatives from α,β-unsaturated imines generated in situ and amino heterocycles. Reaction is general with respect to all three components, namely (i) nitrile, (ii) aldehyde, and (iii) amino heterocycle reagents. Good yields (52–77%), convenient isolation of the targeted molecules are the...
Two novel and highly efficient solid support (SS) versions of tetrahydroquinoline synthesis based on the three component condensation reaction of aldehydes, anilines, and electron-rich olefins catalyzed by trifluoroacetic acid were described. In the first version, 4-carboxybenzaldehyde was immobilized on Acid sensitive MEthoxy BenzAldehyde (AMEBA) resin as the solid-supported component of this reaction...
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