• Bulletin of the Korean Chemical Society
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• 제18권2호
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• pp.164-170
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• 1997

Via hydrosilation-alkenylation approach using hydrosilanes (HSiMeCl2 and HSiCl3) and allylmagnesium bromide with siloxane tetramer (MeCH2=CHSiO)4 as core molecule, noble carbosilane dendrimers with 12, 24, 48 and 96 allylic end groups have been prepared. The reaction path of the repetitive alkenylation and hydrosilation was monitored by means of NMR spectroscopic measurements. Every step for the formation of dendrimer provided almost quantitative yields as pure dendrimers. Based on the observation of UV spectroscopic measurements of Gn (n=1-4) molecules containing allylic end groups, the maximal molal absorption coefficients (εmax) at λmax and the number of double bonds proved an exponentially increased correlation.

• Bulletin of the Korean Chemical Society
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• 제27권2호
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• pp.286-290
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• 2006

Rapid and facile syntheses of N-alkenyl lactam series via condensation between lactams and a variety of aldehydes such as n-propanal, isobutanal, n-butanal, n-hexanal, n-octanal and phenylacetaldehyde were studied under microwave or conventional heating. Various solid catalysts and solvents were examined to maximize the yields of condensation reactions.

• 대한화학회지
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• 제43권4호
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• pp.393-400
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• 1999

Hyperbranched polymer를 이용한 나뭇가지꼴 카보실란 거대분자를 합성하였다 Hyperbranched polymer의 영세대 화합물의 합성은 $HSiMe_{3-n}$$(CH_2CH=CH_2)_n$(n=2; $AB_2$,3;$AB_3$형)의 수소화규소첨가반응 방법을 이용하여 합성하였다. Hyperbranched polymer $AB_2$와 $AB_3$형 고분자 화합물은 수소화규소첨가반응과 알켄첨가반응에 의해 Gn+1형 나뭇가지꼴 거대분자로 성장하였다. Gn+2P세대 화합물은 $HSiMeCl_2$와의 수소화규소첨가반응 방법에 의해 모든 가지가 동일형 화합물을 형성하지 못했다. Gn과 Gn+1형 고분자 화합물은 9-BBN과의 반응과 반응생성물의 산화반응에 의해서 polysilol을 형성하였다. 반응의 정도는 NMR에 의해서 확인할 수 있었다.