Synthesis of new bis(3-perfluoroalkyl-1H-pyrazole) polyoxyethylene

• Free radical addition of F-alkyliodides to bis(propargyl) ethers 1, in the presence of AIBN, affords the corresponding EE/EZ and ZZ ethers 2.
• Dehydroiodation of compounds 2 produces bis(perfluoroalkylpropargyl) polyoxyethylene ethers 3.
• Hydrate hydrazine react with dialkynes 3 gives the bis(perfluoroalkylpyrazol) ethers 4.

Free radical addition of perfluoroalkyl iodides to bis(propargyl) polyoxyethylene ethers 1, using AIBN as initiator, affords the corresponding EE/EZ and ZZ bis(perfluoroalkylallyliodo) ethers 2. Dehydroiodation of compounds 2 produces bis(perfluoroalkylpropargyl) polyoxyethylene ethers 3. Hydrate hydrazine react with dialkynes 3 gives the bis(perfluoroalkylpyrazol) ethers 4.

Free radical addition of perfluoroalkyliodides to bis(propargyl) polyoxyethylene ethers 1, using AIBN as initiator, succeeded by dehydroiodation, then followed by hydrate hydrazine action, allowed to the bis(perfluoroalkylpyrazol) ethers 4.Figure optionsDownload as PowerPoint slide