| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
The concept of keto-enol type tautomerization contains fundamental importance in organic chemistry. However, little is known about the chemistry of tautomerization of the heavier congener of chalcogen compounds, due to their instability. In order to investigate the properties of such reactive species, we used "kinetic stabilization".
For the synthesis of tautomerizable heavier analogs of main group element compounds, a novel peripherally extended sterically demanding primary alkyl group based on the triptycene (Trp) framework, Trp*CH2, was designed and synthesized. The introduction of the Trp*CH2 and Trp groups onto a Si atom of Si=S allowed observation of a stable silanetion. The corresponding Si=Si double bond compound was also synthesized as the first stable tetraalkyldisilene that contains primary alkyl groups.
The observed non-bonding meshing-gear system of Trp* and Trp groups should offer an effective means of protecting the reactive chemical bonds.
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