2-(Trimethylsilyl)ethanol → HCID 56636303, compound

Participants

Reaction Steps

(R)-Dihydro-5-phthalimido-4-oxo-2-phenyl-2H-1,3-thiazine-3(4H)-acetic acid, ethyl ester (isomer A) (1.0 g., 2.36 mmole) is heated in 2-trimethylsilylethanol (5.58 g., 47.2 mmole) in the presence of titanium (IV) ethoxide (135 mg., 0.59 mmole). Upon completion of the reaction, the reaction mixture is diluted with ether, washed with 1N hydrochloric acid, water, saturated aqueous sodium bicarbonate, and brine, dried (MgSO4), and concentrated in vacuo. The residue is purified chromatographically on silica gel eluting with hexane/ethyl acetate (3:1) to give (R)-dihydro-5-phthalimido-4-oxo-2-phenyl-2H-1,3-thiazine-3(4H)-acetic acid, 2-(trimethylsilyl)ethyl ester.

Provenance & Evidence