Dimethylformamide → 2,2-Difluoro-7-(2-m-tolyl-ethoxy)-benzo[1,3]dioxole-5-carboxylic Acid Methyl Ester

Participants

Reaction Conditions

Reaction Steps

1.8 g of 2,2-difluoro-7-hydroxy-benzo[1,3]dioxole-5-carboxylic acid methyl ester, 4.6 g of 1-(bromo-ethyl)-3-methyl-benzene, and 3.2 g of K2CO3 were added to 70 ml of anhydrous DMF and the reaction mixture stirred at 80° C. for 3 h. The reaction mixture was then allowed to cool to room temperature, 300 ml of water added and extracted three times using 100 ml of EA each. The organic layer was then dried using MgSO4 and evaporated. Chromatography on silica gel using EA/HEP 1:4 yielded 2.4 g of the title compound, colorless oil. Rf (EA/HEP 1:4)=0.32

Provenance & Evidence