Patent ID: 8232416

Claim:
A method of manufacturing a compound represented by formula (2), the method comprising: thermally decomposing a compound represented by formula (1) by a flow method under a reduced pressure: wherein Rf 1 and Rf 2 each independently represents a fluorine atom or a perfluorinated monovalent substituent; Rf 3 and Rf 4 each independently represents a fluorine atom, a perfluorinated monovalent substituent or a perfluorinated divalent substituent; Rf 3 and Rf 4 may combine with each other to form a ring; each of Rf 3 and Rf 4 may combine with Rf 5 to form a ring; and Rf 5 represents a perfluorinated (n+1)-valent to (2n+2)-valent linkage group, provided that n represents an integer of 1 to 5.