Application of directed metalation in synthesis. Part 7: Synthesis of suitably functionalised benzo[b]thiophenes as key intermediates in the synthesis of benzothienopyranones

Tetrahedron Letters

Volumn 46, Issue 9, 2005, Pages 1493-1495

  Pradhan, Tarun Kanti ^a   De, Asish ^a  

^a DEPARTMENT OF MATERIALS SCIENCE   (India)

Author keywords

Benzothienopyranone; Chemoselectivity; Directed metalation; Thioaurone; Thioindoxyl

Indexed keywords

ACETONE; AMIDE; KETONE DERIVATIVE; THIOPHENE DERIVATIVE;

ARTICLE; CHEMICAL REACTION; REACTION ANALYSIS; SYNTHESIS; TEMPERATURE SENSITIVITY;

EID: 13444283791     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2005.01.038     Document Type: Article

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13. 2S: M (254.30) C, 70.84; H, 3.96. Found: C, 70.93; H, 3.85
14. We thank the referee for his valuable suggestion
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16. 2S: C, 64.05; H, 4.89. Found: C, 64.23; H, 4.73
17. 2S: C, 72.83; H, 4.31. Found: C, 72.74; H, 4.43
18. 2S: C, 66.65; H, 3.73. Found: C, 66.53; H, 3.61
19. T.K. Pradhan, C. Mukherjee, S. Kamila, and A. De Tetrahedron 60 2004 5215 5224