Method for producing fluoropolyether-group-containing compound

A method for producing a fluoropolyether group-containing compound, comprising reacting a fluoropolyether group-containing compound (A) represented by the following formula:

• X11—(R11)n11—RF1—X12 (1)
• wherein
• X11 and X12 are each independently a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, or a hydrogen atom, provided that at least one of X11 and X12 is a chlorine atom, a bromine atom, or an iodine atom;
• R11 is a C1-16 alkylene group optionally substituted with one or more fluorine atoms;
• n11 is 0 or 1;
• and
• RF1 is a group represented by the following formula:
• —(OC6F12)a1—(OC5F10)b1—(OC4F8)c1—(OC3RFa6)d1—(OC2F4)e1—(OCF2)f1—;
• each of the repeating units is linear;
• a1, b1, c1, d1, e1, and f1 are each independently an integer of 0 to 200, the sum of a1, b1, c1, d1, e1, and f1 is 1 or more, and the occurrence order of the respective repeating units enclosed in parentheses provided with a1, b1, c1, d1, e1, or f1 is not limited in the formula;
• and
• RFa is each independently at each occurrence a hydrogen atom, a fluorine atom, or a chlorine atom, in the presence of a metal catalyst to form a fluoropolyether group-containing compound (B) containing two or more moieties derived from the fluoropolyether group-containing compound (A).