反应详情

1.6 g of sodium borohydride in 20 ml of ethanol are added at 0°-5° to a solution of 10 g of 6-chloro-3a,4,9,9a-tetrahydro-2-methylbenz[f]isoindolin-4-one in 100 ml of ethanol, stirred at room temperature for a further hour, water is added and the mixture evaporated. The residue is taken up in 10% tartaric acid, the aqueous phase extracted with ether, mixed with 2 N caustic soda solution and extracted with ethyl acetate. The ethyl acetate phase is dried over sodium sulphate and evaporated. The residue is crystallised from methylene chloride/pentane to yield 6-chloro-3a,4,9,9a-tetrahydro-2-methylbenz[f]isoindolin-4-ol. M.P. 178°-182°.

1. customthe mixture evaporated
2. extractionthe aqueous phase extracted with ether
3. additionmixed with 2 N caustic soda solution
4. extractionextracted with ethyl acetate
5. dry with materialThe ethyl acetate phase is dried over sodium sulphate
6. customevaporated
7. customThe residue is crystallised from methylene chloride/pentane