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1. (WO2018087064) METHOD FOR PRODUCING TRIARYLORGANOBORATES

Pub. No.:    WO/2018/087064    International Application No.:    PCT/EP2017/078415
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Wed Nov 08 00:59:59 CET 2017
IPC: C07D 309/34
C07C 271/16
C07C 271/20
C07C 271/24
C07C 271/28
C07F 9/54
C07D 233/58
C07D 335/02
C07D 347/00
C07C 211/63
C07C 211/64
C07C 217/18
C07C 219/06
C07C 219/14
C07C 229/12
C07C 381/12
C07F 5/02
C07D 213/02
G03F 7/035
G03H 1/00
G03C 1/08
G11B 7/0065
C07C 25/18
C07D 233/02
C07D 247/00
Applicants: COVESTRO DEUTSCHLAND AG
Inventors: RÖLLE, Thomas
BERNETH, Horst
HÖNEL, Dennis
BRUDER, Friedrich-Karl
KINTRUP, Jürgen
Title: METHOD FOR PRODUCING TRIARYLORGANOBORATES
Abstract:
The invention relates to a method for producing triarylorganoborates from organoboronic acid esters in the presence of an n-valent cation 1/n Kn+, comprising the anhydrous treatment of the reaction mixture, and to the use of the obtained triarylorganoborates as coinitiators in photopolymer formulations, holographic media and holograms. The claimed method includes providing an alkyl or cycloalkylboronic acid ester of formula B-R'(OR2)(OR3) in an aprotic solvent in the presence of a metal, adding the aryl halide to produce an organometallic compound in situ, adding a ligand for the ion exchange and separation of the produced metal salts and solids (formula (A)). Triarylalkylborates of formulas (C) and (CC) are also claimed.