Patent ID: 8119802

Claim:
A process for preparing a fluorinated dye selected from the group consisting of a compound of the following general formula I: where R 1 to R 8 are each independently selected from the group consisting of hydrogen, halogen, C 6 -C 22 -aryl radical, C 6 -C 22 -heteroaryl radical, CN, R 13 —O—, R 13 —S—, R 13 R 14 N—, where R 13 and R 14 are each independently selected from the group consisting of hydrogen, C 1 -C 20 -alkyl radical, C 2 -C 20 -heteroalkyl radical, C 6 -C 22 -aryl radical, C 6 -C 22 -heteroaryl radical, where the aryl and heteroaryl radicals are optionally bonded to the base structure via a saturated or unsaturated carbon bridge having from 1 to 6 carbon atoms and the alkyl-, heteroalkyl-, aryl- and heteroaryl radicals can be partially or fully fluorinated, M and Q are each O, R 9 , R 10 together form a cycle of the general formula II where S and T are each O, R 12 is a fully or partly fluorinated C 4 -C 12 -alkyl radical having a —CF 2 — group that is bonded to the aromatic without an intervening oxygen or sulfur atom, and n is from 1 to 12, where, if R 9 and R 10 form a cycle of the general formula (II) and M, Q, S and T are each O, R 11 and R 18 are each independently selected from the group consisting of hydrogen, halogen, optionally partly or fully fluorinated C 1 -C 20 -alkyl radical, C 1 -C 20 -heteroalkyl radical, C 6 -C 22 -aryl radical and C 6 -C 22 -heteroaryl radical, where the aryl and heteroaryl radicals are optionally bonded to the nitrogen via a saturated or unsaturated carbon bridge having from 1 to 6 carbon atoms, and the alkyl or heteroalkyl radicals may have functional groups, or, if R 9 and R 10 form a cycle of the general formula (II) and M, Q, S and T are each O, each of R 11 and R 18 together form a saturated or unsaturated, branched or unbranched carbon bridge having from 1 to 18 carbon atoms between two molecules of the compound of the general formula (I) irrespective of the remaining R 11 and/or R 18 , by reacting the corresponding compounds which do not have R 12 with compounds of the general formula R 12 A, where A is selected from the group consisting of I and Br, and R 12 is as defined above.