Synthesis of 1-tosyl-4,6-dihydrothieno[3,4-d]pyrazole 5,5-dioxides as precursors to pyrazole analogue of o-quinodimethane

Synthetic Communications

Volumn 26, Issue 3, 1996, Pages 569-576

  Tso, Hsi Hwa ^a   Chang, Yu Ming ^a   Tsay, Hongru ^a  

^a INSTITUTE OF CHEMISTRY   (Taiwan)

Author keywords

[No Author keywords available]

Indexed keywords

PYRAZOLE DERIVATIVE; PYRAZOLO[4,5 E]ISOINDOLE DERIVATIVE; THIENO[3,4 D]PYRAZOLE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; DRUG SYNTHESIS; NUCLEAR MAGNETIC RESONANCE; REACTION ANALYSIS;

EID: 0030063373     PISSN: 00397911     EISSN: None     Source Type: Journal    
DOI: 10.1080/00397919608003650     Document Type: Article

References (8)

1. For recent reviews, see (a) Chou, T. S. Rev. Heteroatom. Chem., 1993, 8, 65 (b) Ando, K.; Takayama, H. Heterocycles, 1994, 37, 1417.
2. For recent reviews, see (a) Chou, T. S. Rev. Heteroatom. Chem., 1993, 8, 65 (b) Ando, K.; Takayama, H. Heterocycles, 1994, 37, 1417.
3. (a) Tome, A. C.; O'Neil, P. M.; Storr, R. C.; Cavaleiro, J. A. S. Synlett., 1993, 397
4. (b) Chou, T. S.; Chen, H. C.; Tsai, C. Y. J. Org. Chem., 1994, 59, 2241.
5. (a) Chou, T. S.; Chang, R. C. J. Org. Chem., 1993, 58, 493
6. (b) Chaloner, L. M.; Crew, A. P. A.; O'Neil, P. M.; Storr, R. C. Tetrahedron, 1992, 48, 8101.
7. We have recently reported a new route to the 3-substituted 2-methoxycarbonyl-4,6-dihydrothieno[3,4-b]thiophene 5,5-dioxide by use of the 3-(phenylthio)-4-acyl-3-sulfolene as starting material, Tso, H. H.; Tsay, H.; Li. J. H. Synth. Commun., in press.
8. Mitkdou, S.; Stephanidou-Stephanatou, J. Tetrahedron Lett., 1990, 31, 5197.