| Budget Amount *help |
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1999: ¥1,500,000 (Direct Cost: ¥1,500,000)
|
|---|
| Research Abstract |
1-(4N,N-Dimethylaminophenyl)-3-(4-nitrophenyl)-1,3-diphenylallene 1 (pale yellow liquid) and 1-(4-carbomethoxyphenyl)-3-(4-N,N-dimethylarrunophenyl)-1,3- diphenylallene 2 (colorless solid) have been synthesized as push-pull type substituted allene derivatives and examined their properties caused by push-pull type polarization. 1-(4-N,N-dimethylaminophenyl)-1,3,3-triphenyl-allene 3, 1-(4-nitrophenyl)-1,3,3-triphenylallene 4, 1-(4- carbomethoxyphenyl) -1,3,3- triphenylallene 5, tetraphenylallene 6 have been also synthesized as the reference compounds.
Although it is expected the reciprocally opposite polarization effects of both substituents (push and pull) raise the contribution of "carbene like" resonance structure in allene moiety, it has been suggested that the polarization through benzene rings was little effective to allene part by the comparison of X-ray molecular structures of reference compounds 3 and 6, 13C NMR chemical shifts and electronic spectra in these series.
X-ray crystallographic analysis of push-pull derivatives, examination of enclathration for 1 and 2, solid state photoreaction of 1, 2 were prevented by low stability and poor crystallinity of 1 and 2.
|
