Sodium Bicarbonate → 2-(5,6-dihydro-2H-4-pyranyl)-1-benzenesulfonyl-5-methylthioindole

Participants

Reaction Steps

To a solution of the compound obtained in Example 14 (1) (39 mg) in benzene (10 ml), p-toluenesulfonic acid monohydrate (3.7 mg) was added and the mixture was heated under reflux for 1 hour. The reaction solution was then poured into a saturated aqueous sodium hydrogencarbonate solution, extracted with dichloromethane, dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure to obtain 33.7 mg of the desired product as a colorless oil.

Provenance & Evidence