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초록보기

1,1’-carbonyldiimidazole (CDI) is a versatile reagent that can be used for synthesizing a variety of organic compounds containing carbonyl functional groups. The reactivity of CDI with two ortho-substituted anilines was tested and characterized with analytic techniques such as NMR, IR, and ESI-MS. A reaction of CDI with two equivalents of di-substituted aniline (N1,N1-diethylbenzene-1,2-diamine) formed a urea compound, 1,3-bis(2-(diethylamino)phenyl)urea (1). On the other hand, a reaction with one equivalent of mono-substituted aniline (tert-butyl (2-aminophenyl)carbamate) formed a substituted benzimidazolone, tert-butyl 2-oxo-2,3-dihydro-1H-benzo[d]imidazole-1-carboxylate (2). These results demonstrated that a singly substituted aniline prefers an intramolecular ring formation while an N,N-doubly-substituted aniline prefers a urea formation.

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Effect of salt on membrane protein caveolin3 proved with NMR spectroscopy Byoungduck Park, Ji-Hun Kim p. 10-14

Synthesis of substituted urea or benzimidazolone using 1,1’-carbonyldiimidazole and substituted anilines Kyounghoon Lee p. 15-19

Discrimination of Turkish propolis from different geographical origins by NMR spectroscopy Young Kee Chae, Hakbeom Kim, Emine Sonay Elgin p. 20-24

Three new okadaic acid derivatives isolated from a benthic dinoflagellate Prorocetrum lima Semin Moon, Dong Han Choi, Yeonjung Lee, Jung-Rae Rho p. 25-31