• 제목/요약/키워드: Imine

검색결과 135건 처리시간 0.028초

Preparation and Characterization of Tin(II) Complexes with Isomeric Series of Schiff Bases as Ligands

  • Refat, M. S.;Sadeek, S. A.
    • 대한화학회지
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    • 제50권2호
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    • pp.107-115
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    • 2006
  • [X=ortho (L1), meta(L2) 및 para(L3)]리간드를 갖는 주석(II) 화합물들을 합성하고, 그 특성을 원소분석, 적외선 분광광도법, 자외선/가시광선 분광광도법 및 열분석법을 이용하여 확인하였다. 자외선 분광광도법을 통하여, 주어진 ONNO 주게 리간드들의 이민(imine) 및 카보닐기의 배위 모드가 C2v 대칭성을 갖는 것으로 나타났다. 또한 열분석 결과, Sn(L3) 화합물이 가장 높은 활성화 에너지를 가지는 반면, Sn(L2) 화합물이 가장 낮은 활성화 에너지를 가짐을 알 수 있었다.

새로운 피라졸린 화합물의 합성과 구조결정 및 항암효과 (Synthesis and Identification of Novel Pyrazoline and Its Anti-cancer Property)

  • 고동수
    • Journal of Applied Biological Chemistry
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    • 제54권2호
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    • pp.143-146
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    • 2011
  • Novel pyrazoline (4) was synthesized from chalcone (3) which was prepared from 2'-hydroxy-l'acetonaphthone (1) and 4-methoxy benzaldehyde (2). Pyrazoline (4) forms resonance assisted hydrogen bond between naphthol hydroxyl group and imine nitrogen in a pyrazoline ring. Pyrazoline (4) shows Poly ADP-ribose Polymerase (PARP) cleavage ability as a proof of apoptosis in cancer cell, which reveals its anti-cancer property.

Synthesis of Piperidones from Benzyl Azides and Acetone

  • Han, Junghoon;Rhee, Young Ho;Park, Jaiwook
    • Bulletin of the Korean Chemical Society
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    • 제35권12호
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    • pp.3433-3436
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    • 2014
  • A new method for the synthesis of 2,2-dimethyl-6-substituted 4-piperidone was developed; two equivalents of acetone were annulated with N-unsubstituted imines in-situ generated from benzyl azides using a ruthenium catalyst in the presence of $\small{L}$-proline.

The Recent Current of Fluorescent Polypyridine Compounds Having Photofuctionality

  • Choi, Chang-Shik
    • Rapid Communication in Photoscience
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    • 제5권2호
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    • pp.21-26
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    • 2016
  • Many kinds of fluorescent polypyridine compounds including bpy and dppz derivatives are described in understanding the recent current of fluorescent materials having photofuctionality. Those polypyridine compounds have the photofunctionality such as the fluorescence recognition and/or photo-switching. Furthermore, those compounds are applicated for the construction of long ranged photoinduced electron/energy transfer system. Various fluorescent ${\pi}-conjugation$ systems connected by amide or imine bond as well as the simple fluorescent bpy derivatives are introduced in this review paper.

An Efficient Synthesis of Substituted Quinolines via Indium(III) Chloride Catalyzed Reaction of Imines with Alkynes

  • Zhu, Mei;Fu, Weijun;Xun, Chen;Zou, Guanglong
    • Bulletin of the Korean Chemical Society
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    • 제33권1호
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    • pp.43-47
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    • 2012
  • An efficient synthetic method for the preparation of quinolines through indium(III) chloride-catalyzed tandem addition-cyclization-oxidation reactions of imines with alkynes was developed. The processes can provide a diverse range of quinoline derivatives in good yields from simple imines and alkynes.

Synthesis of N-methylspiro [1,2,3,4-tetrahydro-naphthalene-1,2'-pyrrolidine]

  • Jang, Jin-Hee;Sin, Kwan-Seog;Park, Hae-Il
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.237.2-237.2
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    • 2003
  • A pathway for synthesis of N-methylspiro [1,2,3,4-tetrahydro-naphthalene-1,2'- pyrrolidine] was developed. Formation of the imine compound from ${\alpha}$-tetralone and methylamine using titanium tetrachloride followed by ddition of allylmagnesium bromide gave (1-allyl-1,2,3,4-tetrahydro-naphthalen-1-yl)methylamine. (omitted)

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Total synthesis of Antofine by using Intramolecular 1.3-dipolar cycloaddition of Azidealkene

  • Lee, Jae-Kwang;Lee, Tae-Ho;Song , So-Young
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.362.2-362.2
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    • 2002
  • Antofine belongs to the Phenathroindolizidine group of alkaloids. This natural products exhibit interesting biological properties such as antitumour activity. and anti-inflammentory. Wittig reaction of phenathrenealdehyde with the phosponium salt provided the phenathreneazidealkene in good yield. Intramolecular 1.3-dipolar cycloaddition of the resulting azidealkent in refluxing benzene proceeded the imine. It was reduced with cyanoborohydride of Noyori's Asymmetric Hydrogenation. (omitted)

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