Ethyl Acetate → (2,3-Dihydroxy-4-methoxy-phenyl)-(1,2,3-trimethoxy-8,9-dihydro-7H-benzocyclohepten-5-yl)-methanone

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

95 (0.69 g, 1.19 mmol) was dissolved in 20 mL of anhydrous EtOH under nitrogen and the reaction mixture was immersed in a water bath to maintain a temperature of 25° C. 1.2 g of Pd—C was added followed by 1,4-cyclohexadiene (1.13 mL, 11.90 mmol) and the reaction mixture was stirred for 7 h. The reaction mixture was monitored for completion by TLC (Rf: 0.32, 60:40 Hex:EA). The reaction mixture was filtered through celite, washed with ethylacetate, rotavaped and purified by column chromatography (20:80 EtOAc:Hexanes) to obtain 0.3 g (63%) of 23 as yellow oil.

Herkunft & Nachweise