A facile entry into a novel class of dispiroheterocyclic framework through 1,3-dipolarcycloaddition of azomethine ylides with 3-arylidene-4-chromanones as dipolarophiles

Tetrahedron Letters

Volumn 50, Issue 43, 2009, Pages 5906-5909

  Augustine, T ^a   Kanakam, Charles C ^a   Vithiya, Scholastica Mary ^b   Ramkumar, V ^c  

^a PRESIDENCY COLLEGE   (India)

^b Auxilium College (Autonomous)   (India)

^c INDIAN INSTITUTE OF TECHNOLOGY MADRAS   (India)

Author keywords

1,3 Dipolar cycloaddition; Azomethine ylides; Chromanones; Dispiroheterocycle

Indexed keywords

4 CHROMANONE DERIVATIVE; AZOMETHINE YLIDE; HETEROCYCLIC COMPOUND; PYRROLIDINE DERIVATIVE; PYRROLIZINE DERIVATIVE; SPIRO COMPOUND;

ARTICLE; CARBON NUCLEAR MAGNETIC RESONANCE; CHEMICAL REACTION; CHEMICAL STRUCTURE; CRYSTAL STRUCTURE; CYCLOADDITION; DECARBOXYLATION; INFRARED SPECTROSCOPY; PROTON NUCLEAR MAGNETIC RESONANCE; SYNTHESIS;

EID: 69749128410     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2009.08.010     Document Type: Article

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15. 4: C, 78.30; H, 5.30; N, 2.95; O, 13.46. Found: C, 78.28; H, 5.44; N, 2.90; O, 13.38.
16. 4: C, 78.71; H, 5.80; N, 2.78; O, 12.71. Found: C, 78.65; H, 5.77; N, 2.88; O, 12.70.
17. 4: C, 78.51; H, 5.56; N, 2.86; O, 13.07. Found: C, 78.44; H, 5.52; N, 2.89; O, 13.15.
18. 4: C, 78.89; H, 6.04; N, 2.71; O, 12.36. Found: C, 78.80; H, 6.12; N, 2.68; O, 12.40.
19. 5: C, 76.53; H, 5.86; N, 2.62; O, 14.99. Found: C, 76.58; H, 5.84; N, 2.57; O, 14.92.
20. 5: C, 77.04; H, 5.73;N, 2.57; O, 14.66. Found: C, 77.12; H, 5.75; N, 2.50; O, 14.63.
21. 4: C, 78.51; H, 5.56; N, 2.86; O, 13.07. Found: C, 78.45; H, 5.65; N, 2.75; O, 13.15.
22. 4: C, 79.02; H, 5.43; N, 2.79; O, 12.76. Found: C, 79.05; H, 5.50; N, 2.72; O, 12.73.
23. 4: C, 79.20; H, 5.67; N, 2.72; O, 12.41. Found: C, 79.15; H, 5.62; N, 2.77; O, 12.45.
24. 5: C, 77.04; H, 5.73; N, 2.57; O, 14.66. Found: C, 77.10; H, 5.67; N, 2.64; O, 14.59.
25. 4: C, 79.37; H, 5.90; N, 2.64; O, 12.08. Found: C, 79.36; H, 5.85; N, 2.70; O, 12.01.
26. 6: C, 75.11; H, 5.78; N, 2.43; O, 16.68. Found: C, 75.05; H, 5.80; N, 2.42; O, 16.70.
27. 4: C, 79.20; H, 5.67; N, 2.72; O, 12.41. Found: C, 79.12; H, 5.60; N, 2.82; O, 12.51.