METHOD OF MANUFACTURING THIENOTHIOPHENE COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a method of efficiently manufacturing a thienothiophene compound having an acyl group at a second position and a fluoro group at a third position.

SOLUTION: This method of manufacturing a thienothiophene compound represented by formula (1) includes processes of: (a) obtaining a 3-fluorothiophene compound represented by formula (3) from a 3-aminothiophene compound represented by formula (2); (b) obtaining a dihydrothienothiophene compound represented by formula (4) from the 3-fluorothiophene compound represented by formula (3); and (c) obtaining the thienothiophene compound represented by formula (1) from the dihydrothienothiophene compound represented by formula (4).

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