First ring contraction-desulfurization of i-(aryl- carbonyl)pyrido[2,i-c]-i,4-thiazines to i-(arylcarbonyl)- indolizines and its application to 3-arylthieno[3,2-a]- indolizine synthesis

Heterocycles

Volumn 74, Issue C, 2007, Pages 521-532

  Kakehi, Akikazu ^a   Suga, Hiroyuki ^a   Goto, Yuichi ^a   Yamaguchi, Nobuhiro ^a  

^a SHINSHU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 40749120932     PISSN: 03855414     EISSN: None     Source Type: Journal    
DOI: 10.3987/com-07-s(w)30     Document Type: Article

References (15)

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2. Kakehi A., lto S., Yonezu S., Maruta K., and Yuito K. Heterocycles 23 (1985) 33
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4. Kakehi A., Ito S., Kinoshita N., and Abaka Y. Bull. Chem. Soc. Jpn. 61 (1988) 2055
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7. It is well known that the absorption band of the carbonyl groups at the 1- and 3-positions on a indolizine skeleton appear at the lower region than usual arylcarbonyl absorption bands because of the high electron densities at these positions. For the examples of such compounds, see ref. 2-4.
8. Kakehi A., lto S., Yamada N., and Yamaguchi K. Chem. Pharm. Bull. 38 (1990) 1527
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