| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
|---|
| Outline of Final Research Achievements |
Carbanions are considered to be reactive and unstable chemical species. During our efforts to find 'superacidic carbon acids', we have found that gem-di(triflyl)ated carbanions are outstandingly stable and isolable as intramolecular salts. In this project, we developed an effective protocol to install the carbanionic substituent into the organic molecules. Our methodology realised a convenient synthesis of nitrogen/phosphorus betaines. Detailed structural analysis of such betaines demonstrated less basic and less nucleophilic characters of the anionic carbon atom. We also prepared several push-pull ethylenes depicted as Tf2C=C(NHR)2. Among these, dialkylated derivative showed a highly twisted structure in solid. In contrast, diaryl derivative was a compound with the nearly planar geometry. Quantum chemical crystallographic analysis of such ultimately polarised ethylenes successfully descripted the bonding situation.
|
