Methyl Isobutyl Ketone → HCID 131733079, compound

Participants

Reaction Steps

A mixture of 2.87 g (3 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, 1.31 g (4.5 mmol) of lithium bis(trifluoromethanesulfonyl)imide, 40 g of water, and 40 g of methyl isobutyl ketone was stirred for 8 hours at room temperature, whereupon the organic layer was taken out. The organic layer was combined with 0.43 g (1.5 mmol) of lithium bis(trifluoromethanesulfonyl)imide and 40 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 bis(trifluoromethylsulfonyl)imide. Brown crystal, 2.9 g, yield 87%.

Provenance & Evidence