≥99.0% Nonafluorobutanesulfonyl Fluoride

≥99.0% Nonafluorobutanesulfonyl Fluoride

C₄F₁₀O₂S

CAS NO.375-72-4

Synthesis method：

1.By starting with butylsulfonyl chloride, butylsulfonyl chloride can be readily prepared by performing a fluorine displacement reaction with potassium chloride, etc., and then loading butylsulfonyl fluoride and anhydrous hydrogen fluoride into the electrolytic cell. Electrolysis is then carried out in a nitrogen atmosphere under normal pressure, replacing the hydrogen in the butylsulfonyl fluoride's alkyl group with fluorine to produce perfluorobutylsulfonyl fluoride. The following is the formula for the reaction.

2.Perfluorobutylsulfonyl fluoride is produced by an electrofluorination process with tetrahydrothiophene-1,1-bicyclide as the raw material. The reaction formula is as follows.

Fluorination processes can be catalyzed by perfluorobutylsulfonyl fluoride. For instance, perfluorosulfonyl fluoride catalysts, such as butylsulfonyl fluoride, perfluoropentyl fluoride, perfluorooctanesulfonyl fluoride, etc., have the benefits of safety, low toxicity, good catalytic selectivity, low dosage, and high fluorination yield when fluorinating 2-trichloromethyldichlorobenzyl.

The precise procedure is as follows: Reduce the temperature to less than 5°C in a 5-liter stainless steel high-pressure reactor that has a thermometer and a mixer. Then, add hydrogen fluoride and 2-trichloromethyldichlorobenzyl one after the other until the mass ratio of the two is 1:1. The catalyst perfluorobutylsulfonyl fluoride is then added; the ratio of catalyst to 2-trichloromethyldichlorobenzyl is 1:0.01. The temperature is then raised to 50–60°C, the reaction pressure is adjusted to 0.8–1.2 WPa, and the reaction is allowed to continue for four hours.

Take a sample and use GC to detect it. The intermediate 2-difluoromonochloromethyldichlorobenzyl has a 0.2% concentration. After the reaction is complete, neutralize with potassium carbonate aqueous solution to p=6~7, purge with nitrogen to eliminate excess hydrogen fluoride, and then leave it alone. 2-trifluoromethyldichlorobenzyl was the isolated product, with a yield of 93.5% and a content of 97.5%. The following is the reaction equation for this process.

The surface energy of fluorinated polyether compounds is lower. The better the water and oil repelling properties, the longer the perfluorocarbon chain. Perfluoroalkylcarboxylic acid and sulfonic acid molecules, which are challenging to further degrade, are what are produced throughout its degradation process. harmful to the environment, as perfluorooctane sulfonate and perfluorooctanoic acid.

The environmental risks associated with the usage of chemicals with long fluorocarbon chains can be avoided by using functional polymers with short fluorocarbon chains. Sulfonylation and N-alkylation were used to create intermediate 4 with a terminal hydroxyl group using perfluorobutanesulfonyl fluoride as the raw material. This was followed by 2,2-dibromomethyloxetane (2) and the Williamson etherification reaction to create new oxetane derivatives 1a and 1b with perfluorobutanesulfonamide side groups. The following is the reaction pathway.

Packing, Storage, Handling and Transportation

Nonafluorobutanesulfonyl fluoride should be kept in dark place, sealed in dry and stored in freezer under -20℃

Hot Tags: ≥99.0% nonafluorobutanesulfonyl fluoride, China ≥99.0% nonafluorobutanesulfonyl fluoride manufacturers, suppliers, factory, Nonafluorobutane 1 sulfonic Acid, Methyl Nonafluorobutyl Ether, 99 0 Lithium Bis 1 1 2 2 3 3 4 4 4 nonafluoro 1 butanesulfonyl Imide CAS NO 119229 99 1, 99 0 Potassium Nonafluoro 1 Butanesulfonate CAS NO 29420 49 3, 99 0 Nonafluorobutane 1 sulfonic Acid CAS NO 375 73 5, 98 Diethyl Fluormalonate