7-(3-cyclopropyl-2-propyl)-1,2-dihydro9-hydroxy-4-oxo-4H-thieno[2,3-c][1]benzopyran → 7-(3-cyclopropyl-2-propyl)-4,4-di(1-hexyl)-1,2-dihydro-9-hydroxy-4H-thieno[2,3-c][1]benzopyran

Participants

Reaction Steps

By reacting 7-(3-cyclopropyl-2-propyl)-1,2-dihydro9-hydroxy-4-oxo-4H-thieno[2,3-c][1]benzopyran with n-hexyl magnesium bromide, using the procedure described above in Example 8, there is obtained 7-(3-cyclopropyl-2-propyl)-4,4-di(1-hexyl)-1,2-dihydro-9-hydroxy-4H-thieno[2,3-c][1]benzopyran. The benzopyran is then reacted with morpholinoacetic acid and dicyclohexylcarbodiimide according to the method of Example 9 to yield the desired ester.

Provenance & Evidence