|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Preparation of Cyclic Urethanes from Amino Alcohols and Carbon Dioxide Using Ionic Liquid Catalysts with Alkali Metal Promoters
| Title: | Preparation of Cyclic Urethanes from Amino Alcohols and Carbon Dioxide Using Ionic Liquid Catalysts with Alkali Metal Promoters |
| Authors: | Fujita, Shin-ichiro Browse this author →KAKEN DB | | Kanamaru, Hiroshi Browse this author | | Senboku, Hisanori Browse this author | | Arai, Masahiko Browse this author →KAKEN DB |
| Keywords: | cyclic urethane | | amino alcohol | | carbon dioxide | | ionic liquid catalyst | | alkali promoter |
| Issue Date: | Oct-2006 |
| Publisher: | MOLECULAR DIVERSITY PRESERVATION International (MDPI) |
| Journal Title: | International Journal of Molecular Sciences |
| Volume: | 7 |
| Issue: | 10 |
| Start Page: | 438 |
| End Page: | 450 |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/16010 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 藤田 進一郎
|
