2016 Fiscal Year Final Research Report
Non-condensation type carboxylation mediated by CO2-Lewis base adducts
| Project/Area Number |
24350079
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Environmental chemistry
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2012-04-01 – 2017-03-31
|
| Keywords | グリーンケミストリー / 二酸化炭素固定 / カルバミン酸 / N-へテロ環カルベン / ウレタン / 金触媒 / 協奏機能触媒 / 付加反応 |
|---|
| Outline of Final Research Achievements |
We designed efficient molecular catalyst systems of CO2-addition reactions by utilization of CO2 adducts formed from molecular bases. For example, imidazolium-2-carboxylates derived from N-heterocyclic carbenes and CO2 can serve as effective organocatalysts for synthesis of five-membered cyclic urethanes from tertiary aziridines.
We also developed the carboxylative cyclization of propargylamines catalyzed by NHC-gold complexes to yield a series of cyclic urethanes. For the cyclization of allenylmethylamines, the related NHC-silver complexes were found to be advantageous. These catalytic cycles were also supported by synthetic studies on alkenylgold complexes as the model intermediates.
|
| Free Research Field |
分子触媒化学 有機金属化学
|
