2,2-Bis(4-methylphenyl)hexafluoropropane synthesis
- Product Name:2,2-Bis(4-methylphenyl)hexafluoropropane
- CAS Number:1095-77-8
- Molecular formula:C17H14F6
- Molecular Weight:332.28
Yield: 90.6%
Reaction Conditions:
with SbF4Cl;hydrogen fluoride for 12 h;Autoclave;Large scale;
Steps:
1
3 kg of toluene was put into a 50-liter autoclave made of stainless steel, 20.5 kg of anhydrous hydrogen fluoride was introduced through a pipe, and 1 kg of SbClF4, And then connected with the pipe of the cylinder of hexafluoropropylene oxide, adding 6 kg of hexafluoropropylene oxide.After the inlet and outlet valves were closed, the stirring was started, heated to an internal temperature of 150 ° C, kept warm and stirred for 12 hours.After the completion of the reaction, the reaction vessel was cooled to room temperature and the reaction product was slowly introduced into 10 liters of cold water. The solid product was observed to precipitate. The solid product was filtered off, washed with water, neutralized, dried and then recrystallized from isopropanol to give white crystals Solid, m.p. 85 ° C. The product was analyzed to be 2,2-bis (4-methylphenyl) -hexafluoropropane, weighing 4.90 kg, and the calculated yield was 90.6%.
References:
SANMING HEXAFLUO CHEMICALS CO LTD;CAO, WEI;Lü, TAO;XIE, WEIDONG;ZHANG, WEI CN104370669, 2016, B Location in patent:Paragraph 0029-0030
