Sodium Chloride → HCID 43652982, compound

Participants

Reaction Steps

p-TosOH×H2O 4 g (21.0 mmol) was added to a solution of 2,5-dichloro-thiophene-3-sulfonic acid-(1,4-dioxa-spiro[4.5]dec-8-yl)-amide 894 mg (2.40 mmol) in acetone (10 ml) and water (1 ml) and stirring was performed for 6 h at RT. After addition of aqueous 1M NaOH (100 ml) and aqueous saturated NaCl solution (100 ml), extraction was performed with CH2Cl2 (3×200 ml). After separation of the organic phases, drying over Na2SO4 and filtration, the solvent was removed by distillation. After purification by means of column chromatography, the product 2,5-dichloro-thiophene-3-sulfonic acid (4-oxo-cyclohexyl)-amide 634 mg (80% of theoretical) was obtained.

Provenance & Evidence