Tetrahydrofuran → HCID 18425700, compound

Participants

Reaction Steps

2.9 g (97 mmol) 80% sodium hydride are suspended in abs. THF and a solution of 21.5 g (121 mmol) diethyl-(cyanomethyl)-phosphonate in 150 ml abs. THF is added dropwise under light cooling. The mixture is subsequently stirred 30 minutes at RT and then a solution of 26.5 g (100 mmol) N-(diphenylmethyl)4-piperidone in 80 ml abs. THF is added dropwise. The suspension is left to stand overnight and subsequently added to 200 ml acetic acid ethyl ester and 100 ml water. The organic phase is separated and washed with 100 ml water, dried over sodium sulfate and the solvent is removed under vacuum. The residue is chromatographically purified over silica gel with dichloromethane. Yield: 22.7 g (78%).

Provenance & Evidence