From Levulinic Acid to Biheterocycles: Synthesis of 1-[(5-Hydroxy-5-trifluoromethyl-3-substituted-4,5-dihydro-1<i>H</i>-pyrazol-1-yl)-3-(5-trifluoromethyl-1<i>H-</i>pyrazol-3-yl)propan-1-ones
Synthetic communications