Sodium Hydroxide → 6-(Methylsulfinyl)-benz[cd]indol-2(1H)-one

Participants

Reaction Steps

To an ice water cooled stirred suspension of 1.3 g of 6-(methylthio)-benz[cd]indol-2(1H)-one (Example 2) in 25 ml of ethanol is added portionwise over 12 minutes 1.2 g of 85% m-chloroperbenzoic acid at a rate so the temperature is kept below 7° C. Stirring is continued over 1.25 hours. The reaction mixture is poured over crushed ice and 8 ml of 1N sodium hydroxide with stirring. After 15 minutes of additional stirring, the reaction mixture is filtered. The filtrate is extracted with methylene chloride, dried with magnesium sulfate and evaporated to afford 0.65 g of the desired product as a yellow solid, m.p. 178°-185° C.

Provenance & Evidence