production method | 1. preparation method: THF2mL, 1mmol of zinc powder are added to a reaction bottle filled with a dropping funnel, a solution of 1mmol of allyl bromide dissolved in 1mLTHF is slowly added in magnetic stirring reaction, and the reaction is carried out at room temperature for 30min. Slowly add cyclohexanone (2)1mmol dissolved in 1mLTHF solution, after adding continue stirring reaction, until the reaction is complete (TLC detection). Add a few drops of water and extract with ether. The ether extract is washed with saturated salt water and dried with anhydrous sodium sulfate. Concentrate to get a crude product. The crude product was purified by silica gel column to obtain compound ① (1) with 92% yield. Note: ① The following compounds can be synthesized by this method (Table I-5-11). [1] |