An efficient synthesis of pyrazolo[3,4-b]pyridine-4-spiroindolinones by a three-component reaction of 5-aminopyrazoles, isatin, and cyclic β-diketones

Tetrahedron Letters

Volumn 52, Issue 21, 2011, Pages 2664-2666

  Quiroga, Jairo ^a   Portillo, Sandra ^a   Pérez, Alfredo ^b   Gálvez, Jaime ^a   Abonia, Rodrigo ^a   Insuasty, Braulio ^a  

^a UNIVERSIDAD DEL VALLE   (Colombia)

^b UNIVERSIDAD DEL ATLÁNTICO   (Colombia)

Author keywords

5 Aminopyrazoles; Cyclic diketones; Isatin; Pyrazolopyridine spiroindolinone

Indexed keywords

1,3 DIKETONE; 3,7,7 TRIMETHYL 1 PHENYL 6,7,8,9 TETRAHYDROSPIRO[PYRAZOLO[3,4 B]QUINOLINE 4,3' INDOLINE] 2',5(1H) DIONE; 3,7,7 TRIMETHYL 6,7,8,9 TETRAHYDROSPIRO[PYRAZOLO[3,4 B]QUINOLINE 4,3' INDOLINE] 2',5(1H) DIONE; 5 AMINOPYRAZOLE; HETEROCYCLIC COMPOUND; INDOLE DERIVATIVE; ISATIN; PYRAZOLE DERIVATIVE; PYRAZOLO[3,4 B]PYRIDINE 4 SPIROINDOLINONE; UNCLASSIFIED DRUG;

AQUEOUS SOLUTION; ARTICLE; CATALYSIS; DRUG SYNTHESIS; MASS SPECTROMETRY; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY;

EID: 79955471166     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2011.03.067     Document Type: Article

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28. 2: C, 68.95; H, 5.79; N, 16.08; found: C, 68.97; H, 5.75; N, 16.09.