| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
In this study, we challenged the synthesis of "silyne" having Si-C triple bond. We examined the reaction of the bulky Rind-substituted dibrormodisilenes, (Rind)BrSi=SiBr(Rind) (Rind = 1,1,3,3,5,5,7-octa-R-substituted s-hydrindacen-4-yl), with N-heterocyclic carbenes (NHCs), producing the bromosilylene-NHC adducts. We also performed the synthesis and characterization of a thermally stable "half-parent" type of diazomethane, (Rind)CHN2, whose structure was determined by X-ray crystallography. The photolysis of (Rind)CHN2 afforded a mixture of the expected cyclic product via the C-H insertion reaction of the generated triplet carbene species and the unexpected nitrile compound, (Rind)CN, as a minor product. We examined the reaction of (Rind)CHN2 with n-butyl lithium (n-BuLi) to produce (Rind)CHN2-n-BuLi adduct, which was confirmed by X-ray diffraction analysis. We also performed the synthetic studies of disilyne with Si-Si triple bond employing the extremely bulky MPind groups.
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