Hydrochloric Acid → HCID 67607204, compound

Participants

Reaction Steps

To a 500 mL one-neck flask was added the product from Step 1(10 g), piperidine (5.2 mL and anhydrous tetrahydrofuran (150 mL). n-Butyl lithium in hexane solution (2.5M, 35 mL) was dropped to the mixture through addition funnel slowly. The reaction mixture was stirred at room temperature for 3 hours. The mixture was poured into cold aqueous hydrochloric acid (10%, 60 mL). The resulting mixture was extracted with ethyl acetate (200 mL) and the recovered top layer was filtered through a silica gel plug using ethyl acetate and hexane mixture as eluent. All silica gel plug and chromatography mentioned herein was carried out using ethyl acetate and hexanesmixture as eluent if not specified. Solid 2-(piperidin-1-yl)-3-methoxy-7,7-dimethyl-9-(2-methoxyphenyl)-7H-benzo[C]fluoren-5-ol (10 g) was obtained by re-crystallization from solution in ethyl acetate/hexanes.

Provenance & Evidence