反应详情

50.7 ml of diisobutylaluminum hydride was added dropwise over 2 hours to a solution of 8.5 g of 1-(2-Trifluoromethyl-phenyl)-cyclobutanecarbonitrile in 85 ml toluene at 0° C. After addition, the ice-water bath was allowed to warm up to room temperature slowly and the reaction mixture was stirred at room temperature overnight. The reaction mixture was poured into 200 ml of 5% sulfuric acid in ice-water, and stirred for 10 minutes. The mixture was extracted four times with ether. The combined ether extracts were dried and concentrated by evaporation in a vacuum. The residue was purified by column chromatography on silica-gel (EtOAc-hexane 5%) to yield 6.2 g of product.

1. additionAfter addition
2. stirringstirred for 10 minutes
3. extractionThe mixture was extracted four times with ether
4. dry with materialThe combined ether extracts were dried
5. concentrationconcentrated by evaporation in a vacuum
6. customThe residue was purified by column chromatography on silica-gel (EtOAc-hexane 5%)