• Archives of Pharmacal Research
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• 제20권2호
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• pp.197-199
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• 1997

In conclusion, benzotriazole analogs prepared in this research showed strong possibility to be photochemically activated DNA cleaving agents. Electrophilic groups such as haloacetoxy groups on the alkyl chain of benzotriazole analogs promote the DNA cleaving ability. Synthesis of 1-(2-Naphthoyl) Benzotriazoles.

• 대한화학회지
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• 제33권5호
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• pp.538-544
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• 1989

1-(phenoxymethyl)benzotriazole(1)과 1-(thiophenoxymethyl)benzotriazole(2) 유도체중의 X 치환기가 전자를 끄는 세기(${\rho}<0$)와 methylene group의 인접 Y원자에 의한 local diamagnetic effect(Y=O(1)>S(2)), 그리고 용매의 극성파라미터($E_T$=Kcal/mol:acetone;42.2>chloroform;39.0)가 클수록 methylene group의 수소원자($H_m$)와 용매사이에 B-형의 수소결합성이 증가되었으며 (1)의 methylene group 에 대한 substituent chemical shift($CH_2-SCS$)에 미치는 자유 에너지 직선관계(LFER)의 조성은 아세톤 용액 중에서 장(F)(또는 유발(I))-효과 보다 공명(R)-효과가 더 크게 나타나는 용매 의존적인 경향이었다.

• 대한화학회지
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• 제43권1호
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• pp.74-84
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• 1999

벤조트리아졸을 보조체로 사용하는 유기합성법은 거의 대부분 이온성 반응 메카니즘으로 설명되며 라디칼 반응을 이용한 벤조트리아졸의 응용은 거의 없었다. 벤조트리아졸의 N-1의 ${\alpha}$위치 탄소 원자에 라디칼 중심을 만든 후 벤조트리아졸의 다섯고리를 형성하는 질소 원자중에서 질소 분자가 빠져나감으로서 생성되는 페닐 라디칼의 반응을 연구하기위해 1[(aryl)(phenylseleno)methyl]benzotriazole, AIBN, 그리고 $Bu_3$SnH을 벤젠에 용해시키고 환류시켜 주었다. 이 반응 혼합물로 부터 2-aminodiphenyl selenide (16∼29%), 2-aminobiphenyl (9∼15%), diphenyl diselenide (30∼93%), 1-(arylmethyl)benzotriazole (9∼39%), 그리고 tributyltinphenyl selenide (10∼36%)을 얻었으며, AIBN없이 과량의 $Bu_3$SnH 존재하에 같은 조건하에서 반응시키는 경우,diphenyl diselenide (53∼100%), benzotriazole (27∼35%) 그리고 1-(arylmethyl)-benzotriazole (16∼33%)와 함께 arylmethylidenaniline이 과량의 $Bu_3S_nH$에 의해 환원된 N-(arylmethyl)anilines (44∼66%)이 생성되었다. 같은 조건 하에서 6-aryl-6-(benzotriazol-1-yl)-1-hexenyl phenyl selenides, AIBN, 그리고 $Bu_3$SnH의 반응으로부터 6-aryl-6-phenylamino-1-hexene(9∼31%)과 1-aryl-1-oxo-5-pentene (15∼44%)을 얻었다. 이들 생성물의 생성 메카니즘을 제시하였으며 벤조트리아졸이 합성 보조체로 이용된 경우 $Bu_3$SnH에 의해 벤조트리아졸의 세개의 질소 원자를 포함하는 다섯원자고리로 부터 라디칼 반응에 의해 질소 분자가 빠져나가는 것을 보여준 새로운 예이다.

• Bulletin of the Korean Chemical Society
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• 제30권7호
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• pp.1445-1451
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• 2009

New benzotriazoles (5-8) or dibenzodiazepine derivatives (11-18) were synthesized starting from 3-[(2-amino- 4,5-disubstitutedphenyl)amino]-5,5-disubstitutedcyclohex-2-enones (1-4) through internal coupling of their diazonium salts or internal Mannich reaction in the presence of aromatic aldehydes. Pharmacological evaluation of benzotriazole and dibenzodiazepine derivatives for their clozapine-like properties revealed that dibenzodiazepine 11 bearing 4-bromophenyl group exhibited the same antipsychotic activity as the reference drug clozapine while the activity of benzotriazole 7 was 25% lesser than that of clozapine. Moreover, compounds 7 and 11 did not show significant CNS depressant activity as well as no or slight neurotoxicity on contrast to clozapine when tested in mice using forced swim, rotarod and horizontal screen tests.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2010년도 하계학술대회 논문집
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• pp.80-80
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• 2010

본 논문에서는 현재 사용되는 변압기의 절연유인 광유와 새롭게 대두되고 있는 식물유의 신유 상태일 때, 온도와 유동대전방지제(Benzotriazole)에 따른 대전경향을 비교, 분석함으로써 변화되는 조건이 절연유에 미치는 영향에 관해 연구하였다. 유동대전현상을 해석하기 용이한 직렬식 대전장치를 설계, 제작하여 실험한 결과 온도의 변화에서는 광유, 식물유 모두 60[$^{\circ}C$] 부근에서 최대치를 발생하였고 유동대전방지제의 첨가에 따라 유동대전은 광유, 식물유 모두 비슷한 경향으로 변화하였다.

• Applied Biological Chemistry
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• 제33권3호
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• pp.231-238
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• 1990

14종의 새로 합성된 1-(phenxymethyl)benzotriazole(I)(Y=0)과 1-(thiophenoxymethyl)benzotriazole (II)(Y=S) 및 1-(azidomethy) benzotriazole(III) 유도체의 구조와 in vitro에서 Pyricularia oryzae, Fusarium axysporum f.sp.sesami, Valsa ceratosperma 및 Botrytis cinerea에 대한 균사 생장을 50% 저해하는 활성($pI_{50}$)사이의 구조-항균활성 상관관계들을 QSAR방법으로 연구하였다. (I)의 항균활성은 (II)와 (III)보다 우세하였으며 phenoxy group(I)의 치환기 효과는 수소 결합성 (HB)과 포물선 관계의 electronic effect($\sigma$), steric effect($B_1$)그리고 hydrophobic effect($\pi$)로 설명된다. P. oryzae와 F. axysporum f.sp.sesami의 항균 활성에 대한 치환기의 적정값은 $B_1$=1.40A, (H)와 $\sigma=0.07{\sim}0.15$, (H)이고 V. ceratosperma와 B. cinerea에 대하여는 각 각 $\sigma=0.23{\sim}0.28$, (C1)과 $\pi=0.70$, (C1)이었으며 가장 호과적인 화합물인 ( I a)와 ( I d)의 구조-활성관계가 검토되었다.

• Archives of Pharmacal Research
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• 제17권3호
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• pp.161-165
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• 1994

New hypolipaemic agents, in which benzotriazole moiety is connected to tetrahydro-4-hydroxy-2H-pyran-2-one by a two-carbon bridge, were designed and synthesized to show sinificant cholesterol-lowering effect comparable to mevinolin.

• Transactions on Electrical and Electronic Materials
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• 제11권6호
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• pp.288-291
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• 2010

Accidents can occur as a result of streaming electrification when transformer oil is used as an insulating oil in large ultra-high voltage transformers. Methods for adding a streaming electrification inhibitor to reduce the streaming electrification has been studied extensively. In this paper, in order to develop a method for reducing streaming electrification effectively, 4 different specimens were prepared by the addition of benzotriazole (BTA) to a virgin specimen with constant stirring. The specimens were examined to determine the appropriate amount of BTA addition that would suppress the streaming electrification most effectively. The results showed that the streaming electrification characteristics of the specimen in the streaming transformer oil were best when the amount of BTA addition was about 10 ppm. The streaming electrification current was reduced by adding 30 ppm BTA until the temperature reached $65^{\circ}C$. The polarity of the streaming electrification current was negative when the temperature exceeded $65^{\circ}C$. Therefore, the streaming electrification current, which can be a cause of transformer accidents, can be suppressed in large ultra high voltage transformer oil. This paper reports on the optimal amount of BTA addition and the best conditions for controlling the streaming velocity of transformer oil.

• Macromolecular Research
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• 제13권5호
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• pp.427-434
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• 2005

To improve the performance and reduce raw material costs, blocked isocyanates were prepared with mixture of blocking agents in many industries. Three blocked isocyanates (adducts) namely $\varepsilon$-caprolactam/benzotriazole-blocked 4,4'-diphenylmethane diisocyanate (MDI), toluene-2,4-diisocyanate (TDI) and 4,4'-dicyclohexyl-methane diisocyanate ($H_{12}$MDI) were synthesized. Six reference adducts were also prepared by blocking MDI, TDI, and $H_{12}$MDI with $\varepsilon$-caprolactam ($\varepsilon$-CL) or benzotriazole. The reactions were carried out in acetone medium and dibutyltin dilaurate (DBTDL) was used as a catalyst. The progress of the blocking reaction was monitored by IR spectroscopy. De-blocking temperatures (dissociation temperatures) of these adducts were studied using DSC and TGA and the results were correlated. As expected, the thermal analysis data showed that de-blocking temperature of blocked aromatic isocyanates was lower than that of the blocked aliphatic isocyanates. The low de-blocking temperature of blocked aromatic isocyanate could be due to electron withdrawing benzene ring present in the blocked isocyanates. It was also found that benzotriazole-blocked adducts de-blocked at higher temperature compared with $\varepsilon$-CL-blocked adducts.

• Corrosion Science and Technology
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• 제22권3호
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• pp.137-152
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• 2023

Polarization behavior and corrosion inhibition of copper in acidic chloride solutions containing benzotriazole were studied. Pourbaix diagrams constructed for copper in NaCl solutions with different BTAH concentrations were used to understand the polarization behavior. Open circuit potential (OCP) depended not only on chloride concentration, but also on whether a CuBTA layer was formed on the copper surface. Only when the (pH, OCP) was located well in the CuBTA region of the Pourbaix diagram, a stable corrosion inhibiting CuBTA layer was formed, which was confirmed by X-ray Photoelectron Spectroscopy (XPS) and a long-term corrosion test. The OCP for the CuBTA layer decreased logarithmically with increasing [Cl^-] activity in the solution. A minimum BTAH concentration required to form a CuBTA layer for a given NaCl concentration and pH were determined from the Pourbaix diagram. It was found that 320 ppm BTAH solution could be used to form a corrosion-inhibiting CuBTA layer inside the corrosion pit in the sprinkler copper tube, successfully reducing water leakage rate of copper tubes. These experimental results could be used to estimate water chemistry inside a corrosion pit.