1,2-DIMETHYL-3-PROPYLIMIDAZOLIUM IODIDE

General procedure: The synthesis of 1-methyl-3-propylimidazolium iodide [1-MPrIM][I] is depicted in Scheme 1. Under microwave exposure, a mixture of 1-methylimidazole (7.78 mL, 100 mmol) and propyliodide (9.74 mL, 50 mmol) was heated for 3 min at 120° C. The yield of this reaction was 87percent. The reaction mixture was evaporated at reduced pressure and the product was washed repeatedly with diethyl ether (5Χ 20 mL) to remove any excess propyl iodide. Then the solvent was removed and the product was dried under vacuum for 8 h to obtain a product with high purity. The resulting 1-methyl-3-propylimidazolium iodide was obtained as a yellowish viscous liquid. 1, 2-Dimethyl-3-propylimidazolium iodide [1, 2-DMPrIM][I] was synthesized in a similar way as the [1-MPrIM][I] ionic liquid. The yield of the synthesis was 92percent. The compound was obtained as a slightly yellow liquid at room temperature20.0 parts of squarylium compound [A-55] was added to 300 parts of water, stirred and redispersed, adjusted to pH 7.0 with 26% aqueous ammonia and dissolved. Into this solution, 192.6 parts of an 8% aqueous solution of tetrabutylammonium bromide was gradually added. Precipitates appeared one after another from the dropping point, and the pH gradually decreased with the addition. No bleed was observed after the addition. The precipitate was separated by filtration from the slurry, washed with water, and dried at 80 C. to obtain 30.7 parts (yield: 99%) of a squarylium compound [A-60].General procedure: The synthesis of 1-methyl-3-propylimidazolium iodide [1-MPrIM][I] is depicted in Scheme 1. Under microwave exposure, a mixture of 1-methylimidazole (7.78 mL, 100 mmol) and propyliodide (9.74 mL, 50 mmol) was heated for 3 min at 120 C. The yield of this reaction was 87%. The reaction mixture was evaporated at reduced pressure and the product was washed repeatedly with diethyl ether (5Chi 20 mL) to remove any excess propyl iodide. Then the solvent was removed and the product was dried under vacuum for 8 h to obtain a product with high purity. The resulting 1-methyl-3-propylimidazolium iodide was obtained as a yellowish viscous liquid. 1, 2-Dimethyl-3-propylimidazolium iodide [1, 2-DMPrIM][I] was synthesized in a similar way as the [1-MPrIM][I] ionic liquid. The yield of the synthesis was 92%. The compound was obtained as a slightly yellow liquid at room temperatureTo 10 mL of dry benzene containing 0.5 g of freshly distilled 5 (3.25 mmol) was added 2 g (16.25 mmol) of 1-iodopropane at room temperature, and the finished reaction solution was allowed to stand. A white precipitate (compound 8) formed almost immediately. The solids were filtered. Approximately 33% of compound 8 was tuned into

Molecular Weight:266.12
Hydrogen Bond Acceptor Count:1
Rotatable Bond Count:2
Exact Mass:266.02800
Monoisotopic Mass:266.02800
Topological Polar Surface Area:8.8
Heavy Atom Count:11
Complexity:103
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes