Methyl butyrate → Methyl 2-ethyl-6-[(4,6-diphenyl-2-pyridyl)oxy]hexanoate

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

The procedure in Example 5 is followed but using 4,6-diphenyl-2-pyridinone (2.8 g) (prepared by analogy with the method described in Patent EP 108 592 from methyl butanoate), methyl 6-bromo-2-ethylhexanoate (5.4 g), silver carbonate (1.6 g) and dimethylformamide (100 cc). The reaction mixture is heated at 100° C. for 31 hours then at 120° C. for 40 hours. The product is purified by chromatography under pressure on silica gel (30-60 mm; eluent: n-hexane-ethyl acetate 9-1). (yellow oil)

Herkunft & Nachweise