http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 裵鮮建 (검색결과 26 건)
- 무료
- 기관 내 무료
- 유료
-
α,β- 불포화 카르보닐 화합물들과 β- ketoanilide들의 반응에 관한 연구
최정실,배선건 群山大學校基礎科學硏究所 1997 基礎科學硏究 Vol.12 No.-
1,3,4,6-Tetrasubstituted 2-pyridones(3,5) and 1,2,5-Substituted cyclohexenones(6) were prepared by the condensation of chalcones(1) and 1,5-diphenyl-1,4-pentadiene-3-one(4) as a α,β-unsaturated carbonyl compound with β-ketoanilides (2) using freshly prepared. sodium ethoxide in ethal at room temperature or under reflux. The reactions appear to proceed via Michael addition of the β- or δ-methylene anion derived from β-ketoanilides to α,β-unsaturated carbonyl compounds(1,4) followed by the condensation of the intermediate. Possible mechanism for their reaction were proposed and the structure of all the compounds(3,5,6)was identified by IR, ¹H-NMR and MS spectral data.
-
Solid Support 상에서 Cr(VI)-Pyrazine Complex에 의한 Alcohol들의 선택적 산화반응
배선건 群山大學校基礎科學硏究所 1993 基礎科學硏究 Vol.8 No.-
CuSo₄·5H₂O와 조합된 중성 Al₂O₃를 solid support로 사용한 Cr(Ⅵ)-pyrazine complex는 매우 선택적 산화제 임을 알수 있었다. CuSO₄·5H₂O와 중성 Al₂O₃를 solid support로 사용하여 상온에서 반응시켜 본 결과 benzylic 및 allylic alcohol은 산화가 된 반면 포화 1급 알콜은 낮은 수율로 혹은 산화반응이 진행되지 않았다. 이때 solid support와 Cr(Ⅵ)-pyrazine complex를 mortar에 함께 갈아서 알콜을 녹인 CH₂Cl₂용액에 넣고 heterogeneous반응을 행함으로써 반응조작과 work-up이 간편하고, 생성물이 환원된 산화제와 오염되지 않아 쉽게 분리되거나 정제되었다. Solid chromium (Ⅵ)-pyrazine complex in combination with neutral alumina and CuSo₄·H₂O was found to be selective and efficient oxidizing agent for the conversion of benzylic and allylic alcohols to their corresponding aldehydes and ketones, whereas oxidation of saturated primary alcohol with same reagent was very sluggish. The product of the present procedure are not contaminated with reduced oxidant and are therefore easily isolated and purified.
-
Chalcone 및 Active methylene 화합물들과 Acetoacetamide의 반응
배선건 群山大學校基礎科學硏究所 1996 基礎科學硏究 Vol.11 No.-
In connection with a programme on the synthesis of monohetrocyclic such as 2-pyridone and pyridine derivatives, acetoacetamide(4) reacts with active methylene compounds(7,9,11) and chalcone (1) to give the corresponding 2-pyridone (8) and cyclohexenone derivatives (6) different from the reaction of chalcone with β-ketoanilides(2).
-
α,β- 불포화 니트릴 화합물들과 active methylene 화합물들의 반응에 관한 연구
전성아,배선건 群山大學校基礎科學硏究所 1997 基礎科學硏究 Vol.12 No.-
2-Cyano-3-phenylacrylic acid ethyl ester(1) as a α,β-unsaturated nitrile compound reacts with substituted acetophenones in the presence of ammonium acetate to give the corresponding 2-pyridone(6) and pyridine(7) derivatives. One pot synthesis of other substituted 2-pyridone(9) and pyridine(10) derivatives by the condensation of substituted aromatic aldehydes with acetophenone in the presence of ammonium acetate was investigated in regard to yield and experimental simplicity. In addition, the 2-pyridone(13) and acrylic urethane(14) were formed synthesized from N-cyanocacetylurethane which is a new reagent for one pot synthesis. Possible mechanism for the formation of 2-pyridone(6, 9, 13) and pyridine(7, 10) derivatives was proposed and the structure of all the synthesized compounds were identified by IR and ¹H-NMR spectroscopic method.
-
Ethyl(ethoxymethylene)cyanoacetate 와 페닐히드라진 유도체들의 반응에 관한 연구
전태용,배선건 群山大學校基礎科學硏究所 1999 基礎科學硏究 Vol.14 No.-
Ethyl(ethoxymethylene)cyanoacetate(6) as a Michael acceptor reaction withsubstituted arylhydrazines(7) in the presence of catalytic amount of triethylamine or not under reflex for 3-4 h to give the corresponding 5-amino-4-carboxylic acidethyl ester(8). Possible mechanism for the formation of these compounds was proposed and the structures of all the synthesized compound were identified by IR and ¹H-NMR spectroscopic method.
-
정세호,배선건 群山大學校基礎科學硏究所 1998 基礎科學硏究 Vol.13 No.-
New derivatives of pyrazole, such as 5-methyl-l,3-diaryl-lH-pyrazole(5a-c),l,3,5-triphenyl-lH-pyrazole(7a-c), l,3-diaryl-5-vinyl-lH-pyrazole(9a-c) and 2,5-aryl-2,3-dihy-dropyrazol-3-ylideneamine(11a-d) were prepared by the reaction of β-difunctional compounds(3-6, 8, 10) with arylhydrazine(14a-c) in the presence of CH₃OH-HCl at room temperature or under reflex. Specially, 2-(2',5'-dimethylphenyl)-5-(3'-nitrophenyl)-2H-pyrazol-3-ol(14) and 5-amino-l-(4'-methoxyphenyl)-3-(3'-nitrophenyl)-lH-pyrazole-4-carboxylic acid ethyl ester(15) were obtained from the reaction of arylidenecyanoacetate(l0c) and arylhydrazinehydrochloride(4b,13) with triethylamine in ethanol under reflex. Possible reaction pathway for the formation of pyrazole derivatives(5, 7, 9, 11, 12, 14, 15) was proposed and the structures of all the synthesized compounds were identified by IR and ¹H-NMR spectroscopic method.
-
새로운 N-치환된 Arylidenecyanoacrylamide 유도체들의 합성
배선건 群山大學校基礎科學硏究所 1996 基礎科學硏究 Vol.11 No.-
A series of N-substituted arylidenecyanoacrylamide derivates(8, 9, 10) have been synthesized in good yield by the reaction of aromatic aldehydes with active methylene compounds containing cyano group in boiling ethanol in the prescience of catalytic amount of triethylamine. The structure of these derivatives are identified by IR and ¹H-NMR spectral data.
-
염화페나실로 합성된 새로운 4급 암모늄염의 계면 활성도
배선건,연영흠 한국공업화학회 2002 공업화학 Vol.13 No.5
염화페나실과 N,N-dimethylalkylamine들의 반응으로 새로운 일련의 4급 암모늄염[dimethyl-(2-oxo-2-phenethyl)alkylammonium chlorides (DPAACs): 3]을 합성하였다. 이들의 구조와 물리적 특성을 조사하였고, 몇 가지 계면활성제의 특성을 측정하였다. 4급 암모늄염 3의 표면장력(γ_cmc)과 최소저해농도(MIC)는 알킬기의 탄소수에 영향을 받은 것으로 나타났으며, 특히 알킬기의 탄소수가 12개인 화합물 3c가 가장 높은 살균력과 좋은 계면활성을 보였다. A new series of quaternary ammonium salts, [dimethyl-(2-oxo-2-phenethyl)alkylammonium chlorides (DPAACs): 3] were prepared from the reaction of phenacyl chloride with N,N-dimethylalkylamines in boiling ethanol or isopropanol. The structure and the physical properties of these compounds were investigated and some surfactant properties of them were measured. The surface tension (γ_cmc) and the minimal inhibitory concentration (MIC) of quaternary ammonium salts were found to be influenced by the carbon atom of alkyl group and especially, compound 3c of 12 carbon atom of alkyl group exhibited high bactericidal activity and good surface-active properties.
-
Cr (VI) 촉매에 의한 Tetraline 의 선택적 산화반응 (I)
배선건,이상봉,박대철,이규완,Sun-Kun Bae,Sang-Bong Lee,Dae-Chul Park,Kyu-Wan Lee 대한화학회 1989 대한화학회지 Vol.33 No.1
Tetralin의 액상 공기 산화반응에 N,N-dialkylamide 용매하에서 Cr(Ⅵ)의 heterocyclic base염들과 CrO$_3$-N,N-dialkylamide complex계를 적용한 결과 CrO$_3$-N,N-dialkylamide complex의 경우, 반응온도 90$^{\circ}$C에서 tetralin의 전환율이 35.2%이었고, ${\alpha}$-tetralone의 선택율은 96.1%이었으며, ${\alpha}$-tetralol은 무시할만한 양으로 생성되었다. Liquid phase oxidation of tetralin with clean air were carried out utilizing complexes composed of various heterocyclic base and CrO$_3$ in N,N-dialkylamides. In the CrO$_3$-N,N-dialkylacetamide complex catalyzed oxidations of tetralin at 90$^{\circ}$C, the maximum conversion of tetralin to the products and selectivity of ${\alpha}$-tetralone were 35.2% and 96.1%, respectively. Under this condition, however, negligible amount of ${\alpha}$-tetralol was determined.
-
裵鮮建,柳珙植,徐惠蓮 群山大學校自然科學硏究所 1989 自然科學硏究 Vol.4 No.-
Substituent effects on the electron delocalizability of derivatives of vinylpyrrole and pyrrole imine have been examined in MeOH solution by ultraviolet spectrophotometry. The effects did not appear to be additive, but longer wavelength shift due to conjugation and electron withdrowing group. Specially, the significant difference in ?? for derivatives of pyrrole imine was seem to be caused by the conjugation effect and the position of the substituents.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
