反应详情

The product of Step 3 (400 mg) is heated in dichlorobenzene at 210° C. for 10 hours. Evaporation of the solvent and chromatography of the residue over silica gel using EtOAc-hexane yields ethyl 5-allyl-6-hydroxy-1,2,3,4-tetrahydrocarbazol-1-ylacetate.

1. customEvaporation of the solvent and chromatography of the residue over silica gel