Ethyl formate → HCID 86670261, compound

Participants

Reaction Conditions

Reaction Steps

In a dehydrated tetrahydrofuran (20 ml) solution of (4-chloro-phenyl)-[6-isopropylidene-tetrahydro-thiopyran-2-ylidene]-amine (1.1 g), 3.6 ml of lithium diisopropylamide (1.5 mol/l, tetrahydrofuran/cyclohexane solution) was added dropwise at −78° C. under a nitrogen atmosphere. After stirring at −78° C. for 30 minutes, a tetrahydrofuran (2 ml) solution of ethyl formate (0.39 g) was added dropwise. After raising the temperature to room temperature and further stirring for 1 hour, an aqueous saturated ammonium chloride solution was added and the reaction mixture was extracted with ethyl acetate. The organic layer was washed with a saturated saline solution, dried over anhydrous magnesium sulfate, filtered and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography to obtain 0.45 g of the target compound.

Provenance & Evidence