反应详情

温度

-78 °C

A solution of 2.09 g (55 mmol) LAH in 250 ml THF was cooled (−50° C.) and treated during 25 min with a solution of 15.02 g (50 mmol) of trans-[4-(Methoxy-methyl-carbamoyl)-cyclohexyl]-methyl-carbamic acid tert-butyl ester in 250 ml THF. The reaction was warmed up to +15° C. for 3.5 h, cooled (−78° C.) and hydrolyzed with a suspension of 15 g MgSO4.7H2O, 15 g silica gel in 50 ml aqueous 10% KHSO4. The cooling bath was removed, THF was added, the mixture was stirred for 30 min and filtered. After evaporation, the residue was dissolved in CH2Cl2, dried over Na2SO4 and evaporated to yield 12.83 (quantitative) trans-(4-Formyl-cyclohexyl)-methyl-carbamic acid tert-butyl ester, MS: 241 (M).

1. temperatureThe reaction was warmed up to +15° C. for 3.5 h
2. customThe cooling bath was removed
3. additionTHF was added
4. filtrationfiltered
5. customAfter evaporation
6. dissolutionthe residue was dissolved in CH2Cl2
7. dry with materialdried over Na2SO4
8. customevaporated