Water → HCID 53860328, compound

Participants

Reaction Steps

To a solution of 5-formyl-2,2'-bithiophene (4.0 g) in ethanol (120 ml) was added dimethoxymethyl methyl ketone (3 ml). Potassium hydroxide aqueous solution (50%) was added dropwisely into the solution mixture at 16° C. Color changed from yellowish brown into dark green, then dark brown. Yellow solid was formed during the reaction. Water was added. Solid residue was filtered and washed with water, redissolved in acetone and separated by silica gel chromatography eluted with ethyl acetate/n-hexane (1:9). Yellowish crystals 1.88 g were obtained, melting point 74° C.

Provenance & Evidence