• 제목/요약/키워드: Isocyanides

검색결과 6건 처리시간 0.02초

Four-Component Synthesis of 2-(N,N-Dialkylamino)-2,4,6-Cycloheptatrien-1-One Derivatives from Tropolone, an Isocyanide, a Primary Amine and an Aldehyde via Ugi-Smiles Coupling Reaction

  • Massoudi, Abdolhossain;Amini, Issa;Ramazani, Ali;Nasrabadi, Fatemeh Zeinali;Ahmadi, Yavar
    • Bulletin of the Korean Chemical Society
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    • 제33권1호
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    • pp.39-42
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    • 2012
  • The use of Smiles rearrangement in Ugi-type couplings with tropolone allows very straightforward multicomponent formation of 2-(N,N-dialkylamino)-2,4,6-cycloheptatrien-1-one derivatives. The Ugi four-component reaction of isocyanides with tropolone (2-hydroxy-2,4,6-cycloheptatrien-1-one), primary amines and aldehydes proceeds smoothly and cleanly under mild conditions to afford 2-(N,N-dialkylamino)-2,4,6-cycloheptatrien-1-one derivatives in fairly good yields.

Efficient Synthesis of Novel 3-Substituted Coumarin-3-carboxamide

  • Sheikhhosseini, Enayatollah;Balalaie, Saeed;Bigdeli, Mohammad Ali;Habibi, Azizollah;Moghaddam, Hamed Piri
    • 대한화학회지
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    • 제58권2호
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    • pp.186-192
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    • 2014
  • A series of novel pseudopeptides contained coumarin skeleton were synthesized through the Ugi-four-component reaction. The 3-substituted coumarin-3-carboxamides were formed through reaction of benzaldehyde derivatives, anilines, coumarin-3-carboxylic acid and isocyanides with high yields and high bond-forming efficiency at room temperature. These novel amidated coumarins exhibit brilliant fluorescence in range of 535-547 nm in chloroform.

Synthesis and Biological Evaluation of 2-Amino-4H-pyran-3,4,5-tricarboxylate Salt Derivatives

  • Akbari, Ali;Azami-Sardooei, Zabihollah;Hosseini-Nia, Asghar
    • 대한화학회지
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    • 제57권4호
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    • pp.455-460
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    • 2013
  • A novel and simple method for the synthesis of 2-amino-4H-pyran-3,4,5-tricarboxylate derivative and the evaluation of their antibacterial activity against Pseudomonas syringae, Xanthomonas citi and Pectobacterium carotovorum are reported. The structure of the isolated compounds has been determined by means of $^1H/^{13}C$ NMR and FT-IR Spectroscopy. The reaction of alkyl isocyanides with acetylenic esters in the presence of dimethyl acetone-1,3-dicarboxylate in the present of $BF_3.SiO_2$ at ambient temperature. Some of the compound showed significant inhibition to growth of bacteria.

Synthesis and Characterization of Phthalocyaninatometal (PcM, M=$Fe^{2+}$, $Co^{2+}$ Complexes with Monodenate Aromatic Isocyanide Ligands

  • 임윤묵;박하선;송수호;박찬조;유하일;이종기;양현수
    • Bulletin of the Korean Chemical Society
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    • 제20권6호
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    • pp.701-704
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    • 1999
  • Metallophthalocyanines [PcM, Pc: phthalocyanine, M: Fe 2+ , Co 2+ ] were reacted with α-isocyanonaphthalene( α-in) and α-isocyanoanthracene (α-ia) to form monomeric complexes. The synthesis and coordination behaviour of the isocyanides as a ligand (L) are discussed. All the products were characterized by spectroscopic methods and instrumental analysis. The electrical conductivities of these complexes, which were not treated with dopant, were attributed to the metal-ligand electron delocalization in the PcML2 complexes. The complexes have an enlarged macrocycle where the π-electron back donating ability of PcM is stronger than the σ-electron coordinating ability of the isonitrile ligands. Their electrical conductivities were measured as σRT = 2.1×10 -9 ~3×10 -10 S/cm. Also thermal stability was investigated in this study.