3709-71-5

Basic information

• Product Name: Perfluoro
• Synonyms: 4-methylpent-2-ene
• CAS NO: 3709-71-5
• Molecular Formula: C6F12
• Molecular Weight: 300.047
• Mol File: 3709-71-5.mol

Chemical Properties

• CAS DataBase Reference: Perfluoro(CAS DataBase Reference)
• NIST Chemistry Reference: Perfluoro(3709-71-5)
• EPA Substance Registry System: Perfluoro(3709-71-5)

Safety Data

• Hazardous Substances Data: 3709-71-5(Hazardous Substances Data)

Upstream product

• 116-15-4 perfluoropropylene 
• 692-50-2 hexafluoro-2-butyne 

Downstream Products

• 1584-03-8 perfluoro-2-methylpent-2-ene 
• 80248-46-0 (1,2,4,4,4-Pentafluoro-1,3-bis-trifluoromethyl-but-2-enyl)-benzene 
• 80248-44-8 ((E)-2,3,4,4,4-Pentafluoro-1,3-bis-trifluoromethyl-but-1-enyl)-benzene 
• 80248-45-9 ((Z)-2,3,4,4,4-Pentafluoro-1,3-bis-trifluoromethyl-but-1-enyl)-benzene 
• 25065-50-3 1,1,3-trihydroperfluoro-2,4-dimethylpentan-1-ol 
• 335-10-4 heptafluoro-isobutyric acid 
• 756-13-8 perfluoro-2-methylpentan-3-one 
• 30320-28-6 1,1,1,2,2,3,3,5,5,5-decafluoro-4-trifluoromethyl-pentane 
• 72487-68-4 5,5,6,6,7,7,7-heptafluoro-4,4-bis(trifl uoromethyl)hept-1-ene 
• 80318-41-8 perfluorobis(methyl)propylmethyl carbanion 

Relevant articles and documents

Process for purifying hexafluoropropene dimers

Perfluoro-4-methyl-2-pentene containing the undesirable perfluoro-2-methyl-2-pentene may be purified by contacting the mixture with at least a stoichiometric equivalent of an aqueous inorganic base (relative to the perfluoro-2-methyl-2-pentene), in the presence of a polar solvent.

OLIGOMERIZATION OF PERFLUOROPROPYLENE CATALYZED BY ?-BIS(ARENE)CHROMIUM(0) COMPLEXES

Oligomerization of perfluoropropylene catalyzed by four ?-bis(arene)chromium(0) complexes (arene = benzene, diphenyl, 1,3,5-trimethylbenzene and hexamethylbenzene) were compared.Besides dimers (I, II) and trimers (III, IV) reported previously , two defluorotrimers VA and VB were found to be present in the oligomer mixtures.The formation of VA and VB was shown to be derived from trimer IV by hydrogenation followed by elimination of two moles of hydrogen fluoride.

?-BIS(BENZENE)CHROMIUM(0)-CATALYZED OLIGOMERIZATION OF PERFLUOROPROPYLENE

In the presence of zerovalent ?-bis(benzene)chromium(0) (I), perfluoropropylene (II) was found to undergo oligomerization under very mild conditions to dimers (b.p. 46 deg, M+, 300) and trimers (b.p. 100-102 deg C, M+ - 19, 431) in the ratio of 2.5-3.0 to 1.One mol of metal complex could catalyze the conversion of 50 mol of perfluoropropylene.One the basis of 19F NMR, the structures of the dimers are III and IV in a ratio of ca. 80/20 and the trimers V and VI; VII and VIII also seemed to be present.V/VI/(VII + VIII) is 80/10/4.In benzene solution, perfluoropropylene was shown not to be catalytically oligomerized by fluoride ion (KF, CrF2 of (CH3)4NF) (nor by monovalent ?-dibenzenechromium(I).A possible mechanism of the reaction was proposed.