Toluene → 5-(7-dibutylamino-9H-fluoren-2-yl)-thiophene-2-carbaldehyde

Participants

Reaction Conditions

Reaction Steps

Under N2 atmosphere, 0.37 parts of (7-bromo-9H-fluoren-2-yl)-dibutyl amine (11), 0.19 parts of 5-formyl-2-thiopheneboronic acid, 0.41 parts of potassium carbonate, and 0.16 parts of PdCl2(dppf) were added into 5 parts of toluene and 5 parts of CH3OH, followed by stirring and mixing. Then, the reaction mixture was heated to 60° C. and reacted for 18 hours. After the reaction mixture was quenched by water, using the diethyl ether to extract the product, and magnesium sulfate was used for dehydration. After removing the solvent, the residual was purified with chromatography method column by using dichloromethane/hexane co-solvent as an eluent, to obtain a compound (12a) of the present example. This compound was in a form of a tangerine solid, and the yield of this compound was 61%.

Provenance & Evidence