Cyclopentanone → Ethyl 2-oxocyclopentanecarboxylate

Beteiligte Stoffe

Reaktionsschritte

Ethyl-2-oxocyclopentane carboxylate (3.9 gm 0.025 m) was fluorinated in a similar manner to that described in Example 1. Work up gave ethyl-2-fluoro-2-oxocyclopentane carboxylate [NMR(CDCl3); 19F, δF =-164.6 ppm (t) JHF =21.0 Hz. MS (EI); M+ 174]. Yield 56%. Also recognised in the reaction mixture was cyclopentanone [M.S. (EI); 84(M+)], unreacted starting material, and diethyl adipate [M.S. (CI); 203 (M+1)+ ]. Conversion 80%.

Herkunft & Nachweise