Diisopropylamine → 5-(Furan-3-yl-hydroxy-methyl)-3-methoxy-2-(2,4,6-trimethyl-phenyl)-cyclopent-2-enone

Participants

Reaction Conditions

Reaction Steps

To a solution of diisopropylamine (527 μl) in THF (5 ml) under nitrogen at −78° C. is added, dropwise, butyl lithium, 2.5M solution in hexane (1.32 ml) and the reaction allowed to stir at −78° C. for 20 minutes. This solution is then added dropwise to a solution of 3-methoxy-2-(2,4,6-trimethyl-phenyl)-cyclopent-2-enone (691 mg) in THF (5 ml) under nitrogen at −78° C. and the resulting solution allowed to stir for a further 30 minutes. A solution of 3-furaldehyde (377 mg) in THF (1 ml) is then added in one portion and the reaction is allowed to warm to room temperature and stirred for a further 30 minutes. The reaction is quenched by the addition of saturated ammonium chloride (50 ml) and extracted with ethyl acetate (50 ml). The organic layer is removed and purified by automated flash chromatography to give 5-(furan-3-yl-hydroxy-methyl)-3-methoxy-2-(2,4,6-trimethyl-phenyl)-cyclopent-2-enone (784 mg)

Provenance & Evidence