Dicyclohexylcarbodiimide → HCID 53890812, compound

Participants

Reaction Steps

1,2-Dihydro-7-(2-eicosyl)-9-hydroxy-4-oxo-4H-thieno[2,3-c] [1]benzopyran is reacted with methyl magnesium bromide according to the procedure described hereinabove in Example 8 to give 1,2-dihydro-4,4-dimethyl-7-(2-eicosyl)-9-hydroxy-4H-thieno[2,3-c] [1]benzopyran. The benzopyran is then reacted with γ-thiomorpholinobutyric acid, acetate salt and dicyclohexylcarbodiimide according to the method of Example 10 to yield the desired ester.

Provenance & Evidence