Methyl Isobutyl Ketone → HCID 87403260, compound

Participants

Reaction Steps

A mixture of 0.96 g (1 mmol) of 3-butyl-2-(2-{3-[2-(3-butyl-1,1-dimethyl-1H-benzo[e]indol-2(3H)-ylidene)-ethylidene]-2-(phenylsulfonyl)cyclopent-1-en-1-yl}ethenyl)-1,1-dimethyl-1H-benzo[e]indol-3-ium p-toluenesulfonate, 0.51 g (1.5 mmol) of potassium perfluorobutanesulfonate, 20 g of water, and 20 g of methyl isobutyl ketone was stirred for 6 hours at room temperature, whereupon the organic layer was taken out. The organic layer was combined with 0.17 g (0.5 mmol) of potassium perfluorobutanesulfonate and 20 g of water and stirred overnight, whereupon the organic layer was taken out. The organic layer was washed with water and concentrated in vacuum. Diisopropyl ether was added to the residue for recrystallization. The crystal was collected and dried in vacuum, obtaining the target compound, 3-butyl-2-(2-{3-[2-(3-butyl-1,1-dimethyl-1H-benzo[e]indol-2(3H)-ylidene)ethylidene]-2-(phenylsulfonyl)cyclopent-1-en-1-yl}ethenyl)-1,1-dimethyl-1H-benzo[e]indol-3-ium perfluorobutanesulfonate. Brown crystal, 1.1 g, yield 92%.

Provenance & Evidence