Formal [4+2] intramolecular cycloaddition ketenimine-imine. Synthesis of benzimidazo[1,2-b]isoquinolines

Tetrahedron Letters

Volumn 40, Issue 33, 1999, Pages 6127-6130

  Alajarín, Mateo ^a   Vidal, Ángel ^a   Tovar, Fulgencio ^a   Conesa, Carlota ^a  

^a UNIVERSITY OF MURCIA   (Spain)

Author keywords

Benzimidazo isoquinolines; Cycloadditions; Ketenimines; Phosphazenes

Indexed keywords

BENZIMIDAZOLE DERIVATIVE; IMINE; ISOQUINOLINE DERIVATIVE; KETENE DERIVATIVE;

ARTICLE; CHEMICAL REACTION; CHEMICAL STRUCTURE; CHROMATOGRAPHY; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; REACTION ANALYSIS; STEREOCHEMISTRY; SYNTHESIS; X RAY ANALYSIS;

EID: 0033551801     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(99)01222-8     Document Type: Article

References (24)

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17. 3 8.20 ppm.
18. -1.
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21. A combined on-line substructure search in the Registry and CA files (CAS) retrieved only five literature references, the most pertinent ones being the following: Andreichikov, Yu. P.; Trukhan, G. E.; Korobkova, V. G.; Lyubchenko, S. N. Khim. Geterotsikl. Soedin. 1974, 1695-1696; Chem. Abstr. 1975, 82, 140009; Schefczik, E. Justus Liebigs Ann. Chem. 1969, 729, 27-32.
22. A combined on-line substructure search in the Registry and CA files (CAS) retrieved only five literature references, the most pertinent ones being the following: Andreichikov, Yu. P.; Trukhan, G. E.; Korobkova, V. G.; Lyubchenko, S. N. Khim. Geterotsikl. Soedin. 1974, 1695-1696; Chem. Abstr. 1975, 82, 140009; Schefczik, E. Justus Liebigs Ann. Chem. 1969, 729, 27-32.
23. A combined on-line substructure search in the Registry and CA files (CAS) retrieved only five literature references, the most pertinent ones being the following: Andreichikov, Yu. P.; Trukhan, G. E.; Korobkova, V. G.; Lyubchenko, S. N. Khim. Geterotsikl. Soedin. 1974, 1695-1696; Chem. Abstr. 1975, 82, 140009; Schefczik, E. Justus Liebigs Ann. Chem. 1969, 729, 27-32.
24. 3) δ 45.76, 60.32, 110.65, 119.96, 122.29, 122.54, 127.36, 127.44, 127.49, 128.20, 128.40, 129.01, 129.47, 129.53, 129.84, 133.57 (s), 134.33 (s), 134.45 (s), 139.40 (s), 141.70 (s), 143.76 (s), 152.87 (s), one quaternary carbon was not observed.