Cyclopentadiene → HCID 15796839, compound

Participants

Reaction Steps

80 g (0.21 mol) of (2a) were added at 10° C. to an about 2 molar solution of cyclopentadienylsodium in tetrahydrofuran (THF), prepared from 27.8 g (0.42 mol) of freshly cracked cyclopentadiene and 16.7 g (0.42 mol) of 60% strength sodium hydride (as an oil suspension) in 200 ml of THF and the reaction mixture was stirred at room temperature for 3 hours. 300 ml of water and 400 ml of toluene were subsequently added. After phase separation, extraction with a further 250 ml of toluene and drying over magnesium sulfate, the solvents were removed and the residue was taken up in 240 ml of n-heptane. The solid was filtered off, washed with n-heptane and dried under reduced pressure. 57 g (65%) of 2b were obtained.

Provenance & Evidence