Sodium Fluoride → Difluoromalonyl fluoride

To a 1 L monel metal reactor charged with 18 g (0.43 mol) of NaF, 12.1 g (0.112 mol) of CH2(COF)2 was charged with condensation, and thereto, 0.1 g/h of fluorine gas was blown gradually while controlling increasing the inner pressure with keeping the reactor at 0° C., and the reaction was conducted. When the total pressure increased by the product reached to 0.44 atm, the blowing of fluorine gas was finshed. The reaction product was separated and purified, and 1.7 g (0.0118 mol) of CF2(COF)2 was obtained. It was confirmed with FT-IR and 19F-NMR that the resulting compound was CF2(COF)2. The yield thereof was 10%.

1. additionwas charged with condensation
2. temperaturewhile controlling increasing the inner pressure
3. customat 0° C.
4. temperatureWhen the total pressure increased by the product
5. customThe reaction product was separated
6. custompurified

ORD 기록

ord-17b2e450575c48c88d007eb0a57546f7

출처 데이터셋

uspto-grants-2004_09

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US06787053B2