Diisopropylamine → HCID 86749013, compound

Participants

Reaction Conditions

Reaction Steps

Dissolve diisopropylamine (0.88 mL, 6.28 mmol) in tetrahydrofuran (7.5 mL). Cool in an ice bath and add, by dropwise addition, n-butyllithium (3.6 mL of a 1.6M solution in hexanes, 5.75 mmol). Stir for 15 minutes, then cool to -78° C. Add a solution of 3 -phenylpropionic acid, t-butyldimethylsilyl ester (1.33 g, 5.04 mmol) in tetrahydrofuran (5 mL). Stir for 45 minutes then add methyl bromoacetate (949 mg, 6.2 mmol). Stir for 3 hours, add saturated ammonium chloride (6 mL) and warm to room temperature. Partition between ethyl ether (75 mL) and water (10 mL). Dry (Na2SO4), evaporate the solvent in vacuo and purify by silica gel chromatography to give 3-phenyl-2-methylcarboxymethylpropionic acid, t-butyldimethylsilyl ester.

Provenance & Evidence