4549-31-9Relevant articles and documents
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Friedman,P.,Allen,P.
, p. 780 - 784 (1965)
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Preparation of novel ionic liquids and their applications in brominating reaction
Li, Hua,Liu, Juan,Zhu, Jiang,Wang, Hongkai
experimental part, p. 685 - 690 (2011/10/12)
Novel acidic ionic liquids, 1-(ω-sulfonicacid)propyl-3- methylimidazolium bromide ([HSO3pmim]Br)and 1-(ω-sulfonicacid)butyl-3- methylimidazolium bromide ([HSO3bmim]Br), were prepared and used as brominating agents, catalysts and solvents in the synthesis of 1,7-dibromoheptane, respectively. 1,7-dibromoheptan with a yield of 95% was obtained at 100 °C for 2 h by simple phase separation. The acidic ionic liquid [HSO3pmim]Br was recycled for 5 times and the yield of 1,7-dibromoheptane did not decrease remarkably, which indicates that catalysts still maintain good selectivity and activity after recycling. The structure of the acidic ionic liquid [HSO3pmim]Br was characterized with IR, and it was found that [HSO3pmim]Br had stronger acidity than other ionic liquid.
Synthesis and solid-state structures of new cyclophane host molecules
Czech, Bronislaw P.,Kus, Piotr,Stetson, Christopher M.,Dalley, N. Kent,Bartsch, Richard A.
, p. 1360 - 1365 (2007/10/03)
Five new cyclophane host molecules (corrals) are prepared by linking together two α,α′-di(4-hydroxyphenyl)-1,4-diisopropylbenzene or α,α′-di(3,5-dimethyl-4-hydroxyphenyl)-1,4-diisopropylbenzene units with two permethylene spacers. Three small cyclophane hosts (boxes) are synthesized by cyclization of α,α′-di(4-hydroxyphenyl)-1,4-diisopropylbenzene with di(bromomethyl)benzene compounds. Solid-state structures of one corral and one box are reported.
