Abstract
A novel synthesis of substituted 6-phenylpyrano[2,3-c]pyrazol-4(1H)-ones via reaction of various 2-substituted or 2,5-disubstituted 2,4-dihydro-3H-pyrazol-3-ones with phenylpropynoyl chloride using calcium hydroxide in refluxing 1,4-dioxane is described. N-Unsubstituted representatives were obtained by treatment of 4-methoxybenzyl-protected congeners with trifluoroacetic acid.
| Original language | English |
|---|---|
| Pages (from-to) | 2583-2589 |
| Number of pages | 7 |
| Journal | Synthesis: journal of synthetic organic chemistry |
| Issue number | 15 |
| Publication status | Published - 2005 |
Austrian Fields of Science 2012
- 301207 Pharmaceutical chemistry