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Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.46B [2007] >
IJC-B Vol.46B(02) [February 2007] >
| Title: | Synthesis and characterization of some 2-(1-phenyl-3-
(thiophen-2-yl)-
1H-pyrazol-4-yl)-
4H-chromon-4-ones, 4-(2-hydroxyphenyl)-
6-(1-phenyl-3-(thiophen-2-yl)-
1H-pyrazol-4-yl)pyrimidine
-2-(1H)-thione, 2-(5-(1-phenyl-3-
(thiophen-2-yl)-1H-pyrazol-4-yl)-
1H-pyrazol-3-yl)phenol and 2-(2,3-dihydro-2-(1-phenyl-3-
(thiophen-2-yl)-1H-pyrazol-4-yl)-
benzo[b][1,4] thiazepin-4-yl)-phenol |
| Authors: | More, M S
Shingare, M S
Kale, S B
Dalvi, N R
Karale, B K |
| Keywords: | Thianyl pyrazoles
Pyrazolyl chromones
Pyrazolyl thiazepins
Pyrazolyl pyrimidines |
| Issue Date: | Feb-2008 |
| Publisher: | CSIR |
| IPC Code: | Int.Cl.⁸C07C |
| Abstract: | Oxidative cyclization of 1 with DMSO-I₂ yields 2-(1-phenyl-3-(thiophen-2-yl)-1H- pyrazol-4-yl)-4H-chromon-4-one 2. Compound 2 reacts with thiourea in the presence of potassium hydroxide to form 4(2-hydroxyphenyl)-6- (1-phenyl-3-(thiophen-2-yl)-1H- pyrazol-4-yl)pyrimidine-2-(1H)-thione 3. Compound 2 is refluxed in ethanol with hydrazine hydrate and KOH to afford 2-(5-(1-phenyl-3-(thiophen-2-yl)- 1H-pyrazol-4-yl)- 1H-pyrazol-3-yl)phenol 4. Compound 1 when treated with 2-amino thiophenol affords 2-(2,3-dihydro-2-(1-phenyl-3- (thiophen-2-yl)-1H-pyrazol-4-yl)- benzo[b][1,4]thiazepin-4-yl)-phenol 5. |
| Page(s): | 360-365 |
| ISSN: | 0376-4699 |
| Source: | IJC-B Vol.46B(02) [February 2007]
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