反应详情

To a mixture of 10 g. of 2-(4-pyridylmethylene)-3,4-dihydro-1(2H)-naphthalenone in 100 ml of water and 200 ml of ethanol is added sufficient chloroform to dissolve the reactants. The pH is adjusted to between 7 and 9 and a 3 molar excess of 30% hydrogen peroxide in water is added dropwise at room temperature. The reactants are stirred for 5 hours after which sufficient ferrous sulfate is added to neutralize the excess peroxide. The mixture is then acidified with hydrochloric acid and the organic solvent evaporated off. The water solution remaining is made basic and extracted with chloroform. The chloroform is evaporated off yielding 3'-(4-pyridyl)-spiro[1,2,3,4-tetrahydronaphthalene-2,2'-oxirane]-1-one.

1. additionTo a mixture of 10 g
2. dissolutionto dissolve the reactants
3. additionis added
4. customthe organic solvent evaporated off
5. extractionextracted with chloroform
6. customThe chloroform is evaporated off