Preparation of Cyclic Urethanes from Amino Alcohols and Carbon Dioxide Using Ionic Liquid Catalysts with Alkali Metal Promoters

Fujita, Shin-ichiro; Kanamaru, Hiroshi; Senboku, Hisanori et al.

International Journal of Molecular Sciences, 2006, 7(10), 438-450

Permalink : https://hdl.handle.net/2115/16010

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アクセス権
open access
URI
https://hdl.handle.net/2115/16010
タイトル
Preparation of Cyclic Urethanes from Amino Alcohols and Carbon Dioxide Using Ionic Liquid Catalysts with Alkali Metal Promoters
著者
Fujita, Shin-ichiro ; Kanamaru, Hiroshi ; Senboku, Hisanori ; Arai, Masahiko
e-Rad_Researcher
80156869
著者名
Fujita, Shin-ichiro
著者名
Kanamaru, Hiroshi
著者名
Senboku, Hisanori
e-Rad_Researcher
60125490
著者名
Arai, Masahiko
言語
英語
キーワード
cyclic urethane
amino alcohol
carbon dioxide
ionic liquid catalyst
alkali promoter
発行日
2006-10
出版者
MOLECULAR DIVERSITY PRESERVATION International (MDPI)
収録物名
International Journal of Molecular Sciences
巻(号)
7(10)
ページ
438-450
抄録
Several ionic liquids were applied as catalysts for the synthesis of cyclic urethanes from amino alcohols and pressurized CO2 in the presence of alkali metal compounds as promoters. A comparative study was made for the catalytic performance using different ionic liquids, substrates, promoters, and pressures. The optimum catalytic system was BMIM-Br promoted by K2CO3, which, for 1-amino-2-propanol, produced cyclic urethane in 40% yield with a smaller yield of substituted cyclic urea and no oligomeric byproducts. For other amino alcohols, cyclic urethanes, cyclic ureas, and/or undesired byproducts were produced in different yields depending on the substrates used. Possible reaction mechanisms are proposed.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
1422-0067