Bulletin of the Korean Chemical Society

  • 제9권6호
  • /
  • Pages.359-362
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  • 1988
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Synthetic Studies on Fused Nitrogen-heterocycles from N-Amino-N,N $^\prime$-dihydrodiazinediones (I). Condensation of N-Amino-N,N $^\prime$-dihydrodiazinediones with 1,3-Dicarbonyl Compounds

  • 발행 : 1988.12.20
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초록

The condensation of 1-amino-1,2-dihydro-3,6-pyridazinedione (1) and 2-amino-2,3-dihydro-1,4-phthalazinedione (2) with 1,3-diketones or 1,3-dialdehydes in polyphosphoric acid gave 6,9-dihydro-6,9-dioxopyridazino [1,2-a][1,2,3]triazines (3-6) and 6,11-dihydro-6,11-dioxo[1,2,3]triazino[1,2-b]phtha lazines (7-10), respectively. The condensation of 2 with 2,4-pentanedione in acetic acid gave N-alkylidene intermediate (11), which was cyclized to 9 by treatment with polyphosphoric acid.

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참고문헌

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