• 공업화학
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• 제5권4호
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• pp.646-656
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• 1994

Pyridine 촉매 존재하에서 고리형 올레핀류의 오존 산화 반응에 의해 ${\omega}$-formyl carboxylic acid를 합성하고 합성시 온도와 용매가 생성물의 수율에 미치는 영향을 고찰하였다. 사용한 시클로올레핀의 종류에 관계없이 반응온도가 증가할수록 ${\alpha}$, ${\omega}$-dicarboxylic acid의 수율은 증가하는데 비하여 ${\alpha}$, ${\omega}$-dialdehyde은 감소하였다. 그리고 용매의 극성이 클수록 ${\omega}$-formylcarboxylic acid의 수율은 증가하였으며 원하지 않는 polymeric ozonide의 수율은 감소하였다. 반응온도 $0^{\circ}C$와 methylene chloride용매를 사용할 경우 cyclohexene, cyclooctene그리고 cyclododecene의 오존 산화 반응으로부터 생성된 ${\omega}$-formyl carboxylic acid의 수율은 각각 59.30%, 55.20% 그리고 36.72%이었다.

• Bulletin of the Korean Chemical Society
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• 제23권4호
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• pp.539-540
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• 2002

• 대한화학회지
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• 제57권2호
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• pp.221-226
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• 2013

A series of some novel 2-[5-(substituted phenyl)-[1,3,4]oxadiazol-2-yl]-benzoxazoles were synthesized by using benzoxazole-2-carboxylic acid on reaction with thionyl chloride in presence of ethanol solvent at room temperature gave benzoxazole-2-carbonyl chloride, which is turned into benzoxazole-2-carboxylic acid hydrazide on reaction with hydrazine hydrate in ethanol solvent under reflux. The subsequent treatment of benzoxazole-2-carboxylic acid hydrazide with an appropriate aromatic carboxylic acid in presence of polyphosparic acid under reflux afforded the title compounds. The chemical structures of the newly synthesized compounds were elucidated by their IR, $^1H$ NMR and Mass spectral data analysis. Further the compounds are used to find out their ability towards anti microbial and nematicidal activity.

• 약학회지
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• 제33권5호
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• pp.280-284
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• 1989

When 2,6-Dimethyl-4-(3'-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid 3-mono methyl ester(3) was reacted with dimethyl methylene ammonium chloride (5a) and $K_2CO_3$ in DMF, 2,6-dimethyl-4-(3'-nitrophenyl)-5-(N,N-dimethylamino)methyl-1,4-dihydropyridine-3-carboxylic acid methyl ester (6a) was obtained in 41% yield. As the same procedure with compound (3) and the other dialkylaminomethylating reagents (5b, c, d, e), 2,6-dimethyl-4-(3'-nitrophenyl)-5-(N,N-diethylamino)methyl-1,4-dihydropyridine-3-carboxylic acid methylester(6b), 2,6-dimethyl-4-(3'-nitrophenyl)-5-(1'-pyrrolidinyl)methyl-1,4-dihydropyridine-3-carboxylic acid methyl ester (6c), 2,6-dimethyl-4-(3'-nitrophenyl)-5-(1'-piperidinyl)methyl-1,4-dihydropyridine-3-carboxylic acid methyl ester (6d) and 2,6-dimethyl-4-(3'-nitrophenyl)-5-(1'-morpholinyl)methyl-1,4-dihydropyridine-3-carboxylic acid methyl ester (6e) were obtained in 28%, 49%, 48% and 18% yield respectively.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1993년도 제2회 신약개발 연구발표회 초록집
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• pp.118-118
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• 1993

퀴놀론 모핵의 합성은 기존에 알려진 합성 방법인 Could-Jacobs방법과 Bayer방법에 의해서 Intermediate로 사용된 7-chloro-1-ethyl-6-fluoro-1, 4-dihydro-4-oxoquinoline-3-carboxylic acid와 1-cyclopropyl-7-chloro-6-Fluoro-1,4-dihydro-4-oxoquinolne-3-carboxylic acid를 합성하였다. Heteroaromatic tin compound는 furan, thiophene, 3-bromopyridine, 2-fluoropyridine에 n-BuLi을 사용하여 metallation 한후 electrophile로 tributyltin chloride를 사용하여 2-tributylstannofuran, 2-tributylst-annothiophene, 3-tributylstannopyridine, 2- fluoro-2-tributylstannop-yridine을 합성할 수 있었다. 이상의 Intermediate와 tin compounds를 p-alladium 촉매하에서 반응시켜 1-ethyl-7-(2-furanyl)-6-fluoro-1,4-dihy-dro-4-oxo-3-quinoline-carboxylic acid (compound 3), 1-ethyl-7-(2-th-iophenyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinol in carboxylic acid(compound 5), 1-ethyl-7-(3-pyridinyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid (compound 7), 1-ethyl-7-(2-fluoro-3-pyrid-nyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid (compound 9), 1-cyclopropyl-7-(2-furanyl) -6-fluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid (compound 4), 1-cyclopropyl-7-(2-thiophenyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid (compound 6) ,1-cyclopropyl-7-(3-pyridinyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid (compound 8), 1-cyclopropyl-7-(2-fluoro-3-pyridinyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinoline carboxylic acid (compound 10)를 합성하였다.

• 한국안전학회지
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• 제13권1호
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• pp.64-69
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• 1998

Three kinds of N-fluoroacyl carboxy pyridinium chlorides were synthesized by the reaction of pyridine-carboxylic acid such as pyridine-2-carboxylic, pyridine-3-carboxylic and pyridine-4-carboxylic acid with long chain perfluoroacyl chloride. The surface chemical properties including surface tension, foaming power, foam stability, effectiveness of wettability and solubilizing effect were measured. These compounds showed good surface activities as emulsifying agent, solubilizing agent and fire-fighting agent.

• Bulletin of the Korean Chemical Society
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• 제25권7호
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• pp.1085-1087
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• 2004

• Bulletin of the Korean Chemical Society
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• 제7권4호
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• pp.296-298
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• 1986

Carboxylic acid anhydrides are rapidly reduced with borane-lithium chloride (1:0.1) system to give corresponding alcohols (diols in the case of cyclic anhydride) quantitatively in tetrahydrofuran at room temperature. This reagent tolerates aromatic acid ester, nitro, and halide functional groups, however competitively reduces aliphatic ester and nitrile groups.

• Bulletin of the Korean Chemical Society
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• 제31권2호
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• pp.286-290
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• 2010

The reaction of carboxylic acid derivatives such as esters, acid chlorides and acid anhydrides with alkynyl lithiums in the presence of lithium morpholinide and $BF_3{\cdot}OEt_2$ gave alkynyl ketones in good yield (73-96%).

• 분석과학
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• 제14권1호
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• pp.1-7
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• 2001

6,6-Dichlorobicyclo[3, 1, 0]hexane-3carboxylic acid를 phase transfer catalyst(PTC)로 benzyl triethylamine chloride(BTEA.Cl)를 사용하여 3-cyclopentenecarboxylic acid로부터 합성하였다. $^1H$ NMR과 $^{13}C$ NMR 분석을 통하여 이 화합물은 boat-like conformation을 갖는 것으로 나타났고 carboxyl group은 trans로 존재하는 것으로 나타났다.