HCID 23330143, compound → HCID 23330141, compound

Participants

Reaction Steps

A suspension of 6-chloro-2,2-ethylenedioxy-1,2,3,4-tetrahydrocarbazole in 200 ml. of 1:1 acetic acid/water was heated at reflux under nitrogen for 1.5 hours. The mixture was filtered hot and the filtrate was cooled in an ice bath and again filtered. Crystallization of the solid from methylene chloride/30°-60° petroleum ether gave 5.74 g. (26% yield) of 6-chloro-1,2,3,4-tetrahydrocarbazole-2-one as a flocculent solid, mp 194°-196°.

Provenance & Evidence