Convenient synthesis of 2,5-disubstituted thiophene from 1,6-dioxo-2,4- diene

Tetrahedron Letters

Volumn 39, Issue 50, 1998, Pages 9191-9192

  Ong, Chi Wi ^a   Chen, Chong Ming ^a   Wang, Long Fu ^a   Shieh, Po Chuen ^b  

^a NATIONAL SUN YAT SEN UNIVERSITY   (Taiwan)

^b TAJEN INSTITUTE OF TECHNOLOGY   (Taiwan)

Author keywords

[No Author keywords available]

Indexed keywords

ALKADIENE; THIOPHENE DERIVATIVE;

ARTICLE; CATALYSIS; CHEMICAL REACTION; REACTION ANALYSIS; SYNTHESIS;

EID: 0032506654     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(98)02094-2     Document Type: Article

References (5)

1. 1. Ong, C. W.; Chen, C. M.; Juang, S. S. J. Org. Chem., 1994, 59, 7915.
2. 2. Ong, C. W.; Chen, C. M. J. Org. Chem., 1995, 60, 3135.
3. 3. Wenkert, E.; Guo, M.; Pizzo, F.; Ramachandran, K. Helv. Chim. Acta, 1987, 70, 1429.
4. 4. Dickinson, R. A.; Kubela, R.; MacAlpine G. A.; Stojanac, Z.; Valenta, Z. Canad. J. Chem., 1972, 50, 2377.
5. 5. 2a : δ 2.19 (s, 3H), 2.44 (s, 3H), 3.80 (s, 2H), 6.62 (d, 1H), 6.66 (d, 1H). 2b : δ 2.22 (s. 3H), 3.77 (s, 2H), 6.29 (d, 1H), 6.60 (d, 1H). 7.33 (m, 3H,) 7.63 (d, 2H). 2e : δ 2.21 (s, 3H), 3.75 (s, 2H), 3.83 (s, 3H), 6.25 (d. 1H), 6.46 (d, 1H), 6.90(d, 2H), 7.56(d, 2H). 3b : δ 2.43 (s, 3H), 4.39 (s, 2H), 6.60 (d, 1H), 6.69 (d, 1H), 7.50 (m. 3H,), 8.01 (d, 2H). 3c : δ 1.28 (t, 3H), 3.74 (s, 2H), 4.20 (q, 2H), 6.59 (d, 1H), 6.70 (d, 1H). 3d : δ 2.44 (s, 3H), 3.05 (s, 3H), 4.42 (s, 2H), 6.60 (d, 1H), 6.70 (d, 1H), 8.11 (q, 4H). 3e : δ 2.43 (s, 3H), 3.87 (s, 3H), 4.34 (s, 2H), 6.59 (d, 1H), 6.68 (d, 1H), 6.94 (d, 2H), 8.00 (d, 2H)