Synthesis of highly congested bi- and terthiophenes; 3,4,3′,′-tetra-tert-butylbithiophene and 3′,4′-di-tert-butyl-2,2′:5′,2″-terthiophene

Heterocycles

Volumn 44, Issue 1, 1997, Pages 75-80

  Nakayama, Juzo ^a   Ting, Yo ^a   Sugihara, Yoshiaki ^a   Ishii, Akihiko ^a  

^a SAITAMA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0002374865     PISSN: 03855414     EISSN: None     Source Type: Journal    
DOI: 10.3987/COM-96-S11     Document Type: Article

References (12)

1. a) J. Nakayama, S. Yamaoka, and M. Hoshino, Tetrahedron Lett., 1988, 29, 1161.
2. b) J. Nakayama and R. Hasemi, J. Am. Chem. Soc., 1990, 112, 5654.
3. c) J. Nakayama and K. Yoshimura, Tetrahedron Lett., 1994, 35, 2709.
4. a) J. Nakayama, Y. Nakamura, S. Murabayashi, and M. Hosbino, Heterocycles, 1987, 26, 939.
5. b) J. Nakayama, T. Konishi, S. Murabayashi, and M. Hosbino, Heterocycles, 1987, 26, 1793.
6. c) J. Nakayama, S. Murabayashi, and M. Hoshino, Heterocycles, 1987, 26, 2599.
7. J. C. Horne, G. B. Blanchard, and E. LeGoff, J. Am. Chem. Soc., 1995, 117, 9571 and references cited therein.
8. 1a
9. A. Minato, K. Suzuki, K. Tamao, and M. Kumada, J. Chem. Soc., Chem. Commun., 1984, 511.
10. 3: C, 66.62; H, 6.71. Found: C, 66.76; H, 6.72 .
11. E.-I. Negishi, T. Takahashi, and A. O. King, Org. Synth., 1993, Coll. Vol., 8, 430.
12. W = 0.0453 for 2211 unique reflections.