• Bulletin of the Korean Chemical Society
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• 제9권3호
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• pp.144-149
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• 1988

Reaction of thianthrene cation radical perchlorate (1) with 1-methyl-4-benzenesulfonylaminobenzene (10) afforded thianthrene (5), N-(4-tolyl)-N-thianthrenylbenzenesulfonamide (14), 1-methyl-3-[N-(4-tolyl)-N-benzenesulfonyl-amino- 4-benzene-sulfonylaminobenzene (16), cis-thianthrene-5,10-dioxide (17), 5-(3'-methyl-6-benzenesulfonylaminobenzene)thian threnium perchlorate (18), and benzenesulfonate. In the meantime, reaction of 1 with 1-ethyl-4-benzenesulfonylaminobenzene (12) afforded 5, 1-ethyl-3-[N-(4-ethylphenyl)-N-benzenesulfonyl]a mino-4-benzenesulfonylaminobenzene (19), 1-benzenesulfonyl-amino-4-[1-(2-benzenesulfonyla mino-5-ethylphenyl)ethyl]benzene (20), and 1-(1-acetamidoethyl)-4-benzenesulfonylaminobenz ene (21). The formations of these products except for 18 and benzenesulfonate could be rationalized by assuming a sulfonamidyl radical as an intermediate.

• Bulletin of the Korean Chemical Society
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• 제9권6호
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• pp.379-381
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• 1988

Racemic nuciferal(1) and nuciferol(2), the terpenic natural perfumeries, have been synthesized by a simple procedure. The benzylic halide 6; 1-(1-chloroethyl)-4-methylbenzene, was prepared by converting p-tolualdehyde(4) into 1-(p-tolyl)-1-ethanol(5), followed by convertion of 5 into corresponding chloride. The Grignard reagent of 6 was reacted with the bromoacetal 7, 2-(2-bromoethyl)-1,3-dioxolane, to give a crosscoupling product 8, which was hydrolysed to 4-(p-tolyl)-pentanal (9). The Wittig reaction of isopropylide 10 with 9 yielded arcurcumen(11). The stereospecific allylic oxidation of the gem-dimethyl olefin 11 with selenium dioxide afforded a trans-aldehyde, (${\pm}$)-1, which was reduced to corresponding alcohol, (${\pm}$)-2.

• 대한화학회지
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• 제36권2호
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• pp.318-323
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• 1992

Vinylsulfilimine 유도체(H, p-$CH_3$, m-TEX>$CH_3$, p-Cl, p-Br, p-$OCH_3$, 및 p-$NO_2$)에 1-methyl-5-mercapto-1,2,3,4-tetrazole을 반응시켜 다음 7가지의 새로운 호합물을 합성하였다. S-Phenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-tolyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-m-tolyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-chlorophenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-bromophenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-methoxyphenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine and S-p-nitrophenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine. 이 화합물들의 구조는 원소분석, MP, UV, IR 및 NMR 스펙트럼에 의해 확인되었다.

• Bulletin of the Korean Chemical Society
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• 제23권2호
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• pp.267-270
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• 2002

Photodissociations of o-, m-, and p-iodotoluene radical cations were investigated by using Fourier-transform ion cyclotron resonance (FT-ICR) spectrometry. Iodotoluene radical cations were prepared in an ICR cell by a photoionization charge-transfer method. The time-resolved one-photon dissociation spectra were obtained at 532 nm and the identities of $C_7H_7^+$ products were determined by examining their bimolecular reactivities toward toluene-$d_8$. The two-photon dissociation spectra were also recorded in the wavelength range 615-670 nm. The laser power dependence, the temporal variation, and the identities of $C_7H_7^+$ were examined at 640 nm. The mechanism of unimolecular dissociation of iodotoluene radical cations is elucidated: the lowest barrier rearrangement channel leads exclusively to the formation of the benzyl cation, whereas the direct C-I cleavage channel yields the tolyl cations that rearrange to both benzyl and tropylium cations with dissimilar branching ratios among o-, m-, and p-isomers. With a two-photon energy of 3.87 eV at 640 nm, the direct C-I cleavage channel results in the product branching ratio, [tropylium cation]/[benzyl cation], in descending order, 0.16 for meta >0.09 for ortho >0.05 for para.

• 한국응용과학기술학회지
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• 제16권4호
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• pp.307-311
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• 1999

Interfacial properties of electrode and organic thin layer is one of the most important factor in performing a Light Emitting Diodes(LED). Phthalocyanine copper was used as a buffer layer to improve interface characteristic, so that device efficiency was improved. In this study, LEDs were fabricated as like structures of Indium-Tin-Oxide (ITO) / N,N' -Diphenyl-N,N'-di(m-tolyl)-benzidine (TPD) / 8-Hydroxyquinoline aluminum(Alq) / Aluminum(Al) and Indium-Tin-Oxide(ITO) / N,N'-Diphenyl-N,N' -di(m-tolyl)-benzidine(TPD) / 2-(4-Biphenylyl)-5(4-tert-butyl-phenyl)-1,3,4-oxadiazole(PBD) / Aluminum(Al). In these devices, CuPC was layered at electrode/organic layer interface. As position is changing and thickness is changing, devices showed characteristic luminescence efficiency and luminescence inensity respectively. We showed in this study that luminescence efficiency was improved with CuPC layer in LEDs. The efficiency of device with layer CuPC is higher than that of 2 layer CuPC. However, the luminescence of 2 layer CuPC device got higher value.

• 한국응용과학기술학회지
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• 제39권5호
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• pp.589-595
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• 2022

안트라센의 골격을 갖는 청색 발광 물질, 9-(2-naphthyl)-10-(p-tolyl)anthracene (2-NTA)를 기본으로 하고, 오렌지 도판트인 루브렌을 다양한 부피비로 사용하여 백색 유기발광소자를 제작하였다. 그 결과 C.I.E. 좌표가 (0.32, 0.39)인 백색 유기발광소자를 얻었다. 다양한 부피비의 소자 중 루브렌을 1.5% 이하로 증착된 소자가 3% 이상으로 증착된 소자 보다 전기발광 효율이 높았다. 더욱이 2-NTA를 포함하는 백색 유기발광소자는 같은 조전하에서 2-NTA 만의 청색 유기발광소자 보다 낮은 턴온 전압을 갖는다. 결론적으로 2-NTA는 적은 양의 오렌지 도판트만으로 순수한 백색 유기발광소자를 구현할 수 있다.

• 농약과학회지
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• 제6권4호
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• pp.279-286
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• 2002

Quinclorac계의 새로운 제초성 화합물을 탐색하기 위하여 기질 화합물로 3-phenyl-5-(3,7-dichloro-8-quinolinyl)-1,2,4-oxadiazole 유도체들을 합성하고 정량적인 구조와 벼(Or-yza sativa L.) 및 논피(Echinochloa crus-galli)에 대한 생장 저해활성($pI_{50}$)과의 관계(QSAR)를 분석하였다. 그 결과, 기질물질은 평면성 화합물로서 벼보다는 논피에 대하여 비교적 높은(논피>벼) 생장 저해활성을 나타내었으며 벼는 전자적 성질(줄기: ${\sigma}_{opt.}=0.49$ 및 뿌리 $R_{opt.}=-0.15$)에 그리고 논피는 줄기와 뿌리, 두 부위 모두 소수성(${\pi}_{opt.}=0.37{\sim}2.40$)에 의존적이었다. QSAR 모델로부터 논피에 대한 선택성 조건은 ortho-치환된 전자 밀게로서 소수성(${\pi}$)이 2.40인 치환체가 phenyl 고리상에 도입되는 경우이었다. 그리고 고활성 분자로서 예측된 2-tolyl 또는 3-tolyl 치환체(${\Delta}pI_{50}=1.26$) 등은 선택성 징후가 엿보이는 화합물이었다.

• 공업화학
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• 제18권5호
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• pp.516-521
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• 2007

새롭게 합성된 $rac-Me_2Si(2-p-tolylindenyl)_2ZrCl_2$ 촉매와 인디닐 리간드에 치환체가 붙어 있지 않는 상용촉매인 $rac-Me_2Si(Ind)_2ZrCl_2$ 촉매들을 조촉매인 methylaluminoxane (MMAO)를 사용하여 에틸렌/1-옥텐 공중합을 실시하였고, 반응물 내 1-옥텐의 농도를 변화시키며 얻어진 공중합체의 특성을 조사하였다. 촉매활성에 있어서 $rac-Me_2Si(2-p-tolylindenyl)_2ZrCl_2$ 촉매를 이용하여 공중합을 실시한 경우 다리구조를 가진 다른 촉매들과 달리 촉매활성이 감소하여 comonomer의 첨가에 따라 활성이 증가하는 comonomer effect는 발견되지 않았다. $^{13}C$ NMR 분석에서 공중합체에 삽입된 1-옥텐의 양은 촉매 리간드에 붙은 치환체에 의존함을 보였으며, 2-p-tolyl 치환체가 붙은 촉매로 얻어진 공중합체에서 1-옥텐 삽입량이 더 높음을 보였다. DSC, GPC 분석에서 반응물 내 1-옥텐의 농도가 증가함에 따라 공중합체의 녹는점, 결정성, 분자량이 모두 감소하였으며 $rac-Me_2Si(Ind)_2ZrCl_2$ 촉매보다 $rac-Me_2Si(2-p-tolylindenyl)_2ZrCl_2$ 촉매의 경우 녹는점, 결정성 및 분자량의 감소폭이 더 크게 나타났다.

• 대한화학회지
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• 제49권3호
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• pp.247-254
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• 2005

• 약학회지
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• 제18권2호
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• pp.145-156
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• 1974

P, P'-Hexachiorobitolyl, p, p-hexachlorobitolylketone and p, p' hexachlorobitolylthiourea were synthesized by the radical chlorination method of Hass and McBeer. Among these comppounds, l wormicidal activity of p.p'-hexachlorobitolythiourea was much most potent against Clonorchis sinensis than Hetol in vitro. In the process of the p, p'-biolyl chlorination, ${\alpha, \alpha, \alpha}$-trichlorobitolyl was not detected, but small amount of ${\alpha, \alpha, \alpha}$-dichlorobitolyl was detected. This compound was immediately converted bitolyl compounds were analyzed, linear relationship was observed between retention indices and number of chlorine in two series of odd and even numbered chlorine compounds.