Sodium Hydroxide → 2-{4,6-bis-[4-(2-Ethylhexyloxy)phenyl]-s-triazin-2-yl}-5-(2-ethylhexyloxy)phenol

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Reaction Steps

83.7 g (0.14 mol) of 4-{4,6-bis[4-(2-ethylhexyloxy)phenyl]-s-triazin-2-yl}-1,3-dihydroxy-benzene together with 500 ml of Methylcellosolve are placed at 80 C. in a 1 l sulfonating flask fitted with stirrer, condenser, internal thermometer and dropping funnel. 18.1 g of a 30% sodium hydroxide solution (0.16 mol) are added, the mixture is stirred for 15 minutes and then a solution of 31.4 g (0.16 mol) of 3-bromomethylheptane and 30 ml of Methylcellosolve are added dropwise over 30 minutes. After stirring at 110 C. for 24 hours, alkylation is complete (thin-layer chromatogram). The mixture is evaporated to dryness under vacuum, the residue is dissolved in 500 ml of toluene and filtered, and the filtrate is subjected to extraction by shaking with water. Drying of the extracts over sodium sulfate and removal of the solvent by distillation give 100.9 g of a red-brown oil. The crude product is dissolved in 200 ml of toluene/ethyl acetate (97.5/2.5) and, for purification, is chromatographed over silica gel (10 cm×40 cm), giving 79.4 g (80% of theory) of the compound of the formula ##STR26## as a honeylike red-brown resin.

Provenance & Evidence