Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization

碩士 === 國立高雄師範大學 === 化學系 === 104 === In this thesis, a series of low symmetric hexaphenylbenzene (HPB) derivatives were synthesize by alkynes [2+2+2] cyclotrimerization which are the precursors of hexabenzocoronene (HBC) derivatives, and high regiospecific hexaphenylbenzene derivatives were obtained...

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Main Authors:	HO,FENG-CHENG, 何夆政
Other Authors:	CHEN,HSIU-HUI
Format:	Others
Language:	zh-TW
Published:	2016
Online Access:	http://ndltd.ncl.edu.tw/handle/52995628404571309180

id	ndltd-TW-104NKNU0065016
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spelling	ndltd-TW-104NKNU00650162017-08-12T04:35:11Z http://ndltd.ncl.edu.tw/handle/52995628404571309180 Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization 利用過渡金屬催化不對稱雙苯炔烴進行[2+2+2]三環化反應形成低對稱六苯基苯衍生物之研究探討 HO,FENG-CHENG 何夆政碩士國立高雄師範大學化學系 104 In this thesis, a series of low symmetric hexaphenylbenzene (HPB) derivatives were synthesize by alkynes [2+2+2] cyclotrimerization which are the precursors of hexabenzocoronene (HBC) derivatives, and high regiospecific hexaphenylbenzene derivatives were obtained, only 1,2,4-regiomer or 1,3,5-regiomer, by controlling electron donating-withdrawing and steric hindrance effective. Depend on this method, low symmetric hexa-peri-hexabenzocornene derivatives were successfully gotten by simple steps, In general, it takes 30~40 steps to afford it. All compounds were characterized by 1H and 13C-NMR, and MALDI-MS spectrometry. The thermotropic liquid crystalline (LC) properties of the compounds were investigated by polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and powder X-ray diffractometry (PXRD). CHEN,HSIU-HUI 陳秀慧 2016 學位論文 ; thesis 144 zh-TW
collection	NDLTD
language	zh-TW
format	Others
sources	NDLTD
description	碩士 === 國立高雄師範大學 === 化學系 === 104 === In this thesis, a series of low symmetric hexaphenylbenzene (HPB) derivatives were synthesize by alkynes [2+2+2] cyclotrimerization which are the precursors of hexabenzocoronene (HBC) derivatives, and high regiospecific hexaphenylbenzene derivatives were obtained, only 1,2,4-regiomer or 1,3,5-regiomer, by controlling electron donating-withdrawing and steric hindrance effective. Depend on this method, low symmetric hexa-peri-hexabenzocornene derivatives were successfully gotten by simple steps, In general, it takes 30~40 steps to afford it. All compounds were characterized by 1H and 13C-NMR, and MALDI-MS spectrometry. The thermotropic liquid crystalline (LC) properties of the compounds were investigated by polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and powder X-ray diffractometry (PXRD).
author2	CHEN,HSIU-HUI
author_facet	CHEN,HSIU-HUI HO,FENG-CHENG 何夆政
author	HO,FENG-CHENG 何夆政
spellingShingle	HO,FENG-CHENG 何夆政 Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
author_sort	HO,FENG-CHENG
title	Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
title_short	Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
title_full	Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
title_fullStr	Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
title_full_unstemmed	Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
title_sort	synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization
publishDate	2016
url	http://ndltd.ncl.edu.tw/handle/52995628404571309180
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Synthesis of low symmetry hexaphenylbenzen derivstives by using unsymmetric diarylalkyne via [2+2+2] transition metal-catalyzed cyclotrmerization

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