反应详情

To a solution of 1,1-dimethylethyl-2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)propanoate (400 mg, 1.4 mmol) in 10 mL of anhydrous DCM was added TFA (2.5 mL) dropwise at r.t. Then the mixture was stirred for 1 hour. The solvent was removed under vacuum to give the crude 2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)propanoic acid, which was used for next step without purification.

1. customThe solvent was removed under vacuum