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2005
Fused pyridine derivatives
R 0450
Synthesis of Novel Hydropyrazolopyridine Derivatives in Solvent-Free Condivia Benzotriazole Methodology. — Acidic treatment of the pyrazoles (I) and
02- 147 tions
(VI) with unactivated and electron-rich alkenes under solvent-free conditions offers a
simple and convenient approach to hydropyrazolopyridines including the novel tricyclic compounds (V) and (VIII). Interestingly, the reaction of (I) and (VI) with styrene
gives the same product. — (ABONIA*, R.; RENGIFO, E.; QUIROGA, J.;
INSUASTY, B.; COBO, J.; NOGUERAS, M.; Tetrahedron 60 (2004) 40, 8839-8843;
Dep. Chem., Univ. Valle, 25360 Cali, Colombia; Eng.) — Jannicke
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