O-Xylene → HCID 20089836, Verbindung

Reaktionsgleichung

[F:1][C:2]([F:16])([F:15])[C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[CH:8]=[CH:7][C:6]2=[O:14].Br[CH:18]1[C:21]2=[CH:22][CH:23]=[CH:24][CH:25]=[C:20]2[CH:19]1Br.C1(C)C(C)=CC=CC=1>O>[F:1][C:2]([F:15])([F:16])[C:3]1[CH:12]=[CH:11][C:10]2[C:9](=[O:13])[C:8]3[C:7](=[CH:19][C:20]4[C:21]([CH:18]=3)=[CH:22][CH:23]=[CH:24][CH:25]=4)[C:6](=[O:14])[C:5]=2[CH:4]=1

Komponenten

Versuchsvorschrift

5.65 g (25 mmol) of 6-(trifluoromethyl)-1,4-naphthoquinone, 9.82 g (about 37 mmol) of 1,2-dibromobenzocyclobutene (contaminated with a little 2-bromo-1-iodobenocyclobutene) and 100 ml of xylene are kept under reflux for 16 hours, using a water separator. The mixture is cooled and the precipitate is filtered off and washed with xylene. Yield 5.82 g (71%); melting point 253°-254° C. The procedure in Examples 58 to 61 is analogous.