Stannane, [2,2'-bithiophen]-5-yltributyl- → 4-Formyl-5-hydroxymethyl-2,2':5', 2"-terthiophene

Participants

Reaction Steps

In a two-necked round bottomed flask was added 5-tributylstannyl-2,2'-bithiophene (2.04 g), bis(triphenylphosphine)palladium (II) chloride (0.19 g), 3-formyl-2-hydroxymethyl-5-iodo-thiophene (1.0 g) and tetrahydrofuran (20 ml). The reaction mixture was refluxed for 16 hours. Extracted with ethyl acetate, washed with brine, dried over anhydrous magnesium sulfate and concentrated. The residue was separated by silica gel chromatography, eluted with n-hexane/ethyl acetate (9:1→1:1 gradient) to give brownish solid product (0.43 g, 38%), melting point 108°-110° C.

Provenance & Evidence