Application of 91912-53-7. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 3-(Pyridin-4-yl)-1H-pyrazol-5-amine, is researched, Molecular C8H8N4, CAS is 91912-53-7, about Organocatalytic Stereoconvergent Synthesis of α-CF3 Amides: Triketopiperazines and Their Heterocyclic Metamorphosis. Author is Foster, Robert W.; Lenz, Eva N.; Simpkins, Nigel S.; Stead, Darren.
The highly enantioselective alkylation of α-CF3 enolates, generated from triketopiperazines, has been accomplished through use of a bifunctional thiourea organocatalyst to facilitate 1,4-addition to varied enone acceptors. On treatment with appropriate nitrogen nucleophiles, the chiral triketopiperazine products underwent metamorphosis, to provide novel fused heterocyclic lactams such as extended pyrazolopyrimidines.
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