Nitromethane → 3-(NITROMETHYL)CYCLOPENTANONE

Participants

Reaction Steps

100 g of 2-cyclopentenone are dissolved together with 666 ml of nitromethane and 5 g of 1,5-diazabicyclo-[4.3.0]non-5-ene (DBN) in 1.1 l of isopropanol, and the solution is left to stand at room temperature for 5 h. The isopropanol is then substantially distilled in vacuo, and the residue is dissolved in ethyl acetate and the solution is washed twice with 0.5 l of dilute sulphuric acid each time. The organic phase is dried with sodium sulphate and evaporated. In this way 154 g (88% of theory) of 3-(nitromethyl)cyclopentanone are obtained sufficiently pure for the next reaction.

Provenance & Evidence