| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
A divalent heavier group 14 element has a Lewis ambiphilic nature with a lone pair and a vacant p-orbital. We have much attention of the structures and the reactivity toward unsaturated compounds, and synthesize the divalent germanium and tin compounds with an axially chiral seven-membered chelate.
The structures of germanium(II) and tin(II) compounds were determined by X-ray diffraction analysis. The reactivity of the tin(II) compound with carbonyl compounds is different from those of germanium one. The germanium(II) compound involved the [2+2+1] cycloaddtion with carbonyl compounds such as benzaldehyde. On the other hand, the tin(II) compound catalyzed the hetero Diels-Alder reaction between Danishefsky's diene and benzaldehyde which is activated by the coordination to the tin(II) center.
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