反应详情

To 50 ml of anhydrous tetrahydrofuran (THF), was added 4.37 g of diisopropylamine. To the mixture was added 29 ml of a hexane solution of n-butyllithium at -60° to -50° C. under a nitrogen stream. To the resulting solution, was added a solution of 7.0 g of methyl 5-chloroindane-2-carboxylate in 10 ml of anhydrous THF at -70° to -60° C. over a period of 10 minutes. After stirring for 30 minutes at the same temperature, a solution of 5.23 g of allyl bromide in 10 ml of anhydrous THF was added dropwise at -70° to -50° C. over a period of 10 minutes. The mixture was further stirred for 24 hours at room temperature to complete the reaction. The reaction mixture was poured into a mixture of 5% aqueous hydrochloric acid solution and ice, and mixed with ether. After the ether layer was separated, the aqueous layer was extracted twice with ether. The ether layers were combined, washed with saturated aqueous sodium hydrogencarbonate solution, then with saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated in vacuo to obtain 8.32 g of the intended product.

1. stirringThe mixture was further stirred for 24 hours at room temperature
2. customthe reaction
3. customAfter the ether layer was separated
4. extractionthe aqueous layer was extracted twice with ether
5. washwashed with saturated aqueous sodium hydrogencarbonate solution
6. dry with materialwith saturated sodium chloride solution, dried over anhydrous magnesium sulfate
7. concentrationconcentrated in vacuo