Patent ID: 7053238

Claim:
A process for producing a fluorinated polyvalent carbonyl compound (5), which comprises reacting a compound of the following formula (1) with a compound of the following formula (2) to obtain a compound of the following formula (3) having a fluorine content of at least 30 mass %, then reacting the compound of the formula (3) with fluorine in a liquid phase to obtain a compound of the following formula (4) and cleaving the ester bonds derived from primary and secondary alcohols in the compound of the formula (4): wherein each of R 1 , R 2 , R 3 and R 4 which may be the same or different, is a monovalent organic group; Q H is a (m+n+p)valent organic group or a single bond; R 1F , R 2F , R 3F , R 4F and Q F are the same groups as R 1 , R 2 , R 3 , R 4 and Q H , respectively, or groups having R 1 , R 2 , R 3 , R 4 and Q H fluorinated, respectively; X is a halogen atom; otherwise, R 2 and R 3 , or R 2F and R 3F , may, respectively, be connected to constitute a bivalent group; each of m, n and p is an integer of at least 0, provided that (m+n+p)≧2 and n and p are not 0 at the same time, and when m is 1, n is 1, and p is 0, or when m is 1, n is 0, and p is 1, Q H may be a single bond, and when Q H is a single bond, Q F is a single bond.