ChemicalBook CAS DataBase List 2-BROMO-3,3,3-TRIFLUOROPROPENE

2-BROMO-3,3,3-TRIFLUOROPROPENE synthesis

5synthesis methods

Product Name:2-BROMO-3,3,3-TRIFLUOROPROPENE
CAS Number:1514-82-5
Molecular formula:C3H2BrF3
Molecular Weight:174.95

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Yield:1514-82-5 80.46%

Reaction Conditions:

with Aliquat 336;sodium hydroxide at 50 - 70;

Steps:

4 Example 4: Process for preparing 2-bromo-3,3,3-trifluoropropene
60g (0.39Mol) of 26.5% Sodium hydroxide solution was charged in a three neck round bottom flask, the centre neck was equipped with reflux divider with condenser, side necks were equipped with thermopocket and addition funnel. Then 3g (0.00742Mol) of trioctylmethylammoniumchloride was added. The reaction mass was agitated and heated to 50°C. At 50°C , the 50g (0.l953Mol) of 2, 3-dibromo-l, 1, l-trifluoropropane addition was started. After completion of addition the temperature was raised to 70°C. The low boiling product refluxed at vapour temperature of 33-34°C in the reflux divider. The 27.5g (0.1571 Mol) 2-bromo-3, 3, 3-trifluoroprop-l-ene product was collected in the reflux divider. The collected product was analysed using GC-MS and GC. (0088) Purity (By GC): 99.20% (0089) Yield: 80.46%

References:

SRF LIMITED;IYENGAR, Sarathy;CHELLAIAH, Maheshwaran;ARUMUGAM, Thirupathi;LOGANATHAN, Vignesh;GOTTUMUKALA, Ramudu Dilli Babu;KIRUBA, Jasmin Glory;RAJAMANI, Nathan;JAIN, Anurag WO2019/220463, 2019, A1 Location in patent:Page/Page column 12

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311-86-4 Synthesis