反应详情

The 20.5 g of 2,3-dihydro4-hydroxy-5-methoxy-1H-inden-1-one were suspended in a mixture of 310 ml of concentrated aqueous hydrochloric acid and 53 ml of water. Freshly prepared zinc amalgame (from 87 g of zinc wool) was added and the mixture was stirred for 3 hours at ambient temperature. After decantation the resting zinc amalgame was washed three times with diethyl ether and the acidic water solution was extracted with diethyl ether. The combined ether solutions were washed with a 1N aqueous hydrochloric acid solution, dried over magnesium sulfate, filtered and evaporated in vacuo to afford 15.0 g of 2,3-dihydro-5-methoxy-1H-inden-4-ol, M.S. (C.I.) (M/Z): 165 [M+H]+.

1. washAfter decantation the resting zinc amalgame was washed three times with diethyl ether
2. extractionthe acidic water solution was extracted with diethyl ether
3. washThe combined ether solutions were washed with a 1N aqueous hydrochloric acid solution
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. customevaporated in vacuo