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- W2951804865 abstract "We describe here, for the first time, that 1-cyano-3-benzoyl-1,2,3,10b-tetrahydropyrrolo[2,1-a]phthalazine (8), prepared by 1,3-dipolar cycloaddition of 2-phenacyl phthalazinium bromide (6a) with acrylonitrile (7a), can be aromatized by tetrakis-pyridine cobalt (II) dichromate (TPCD) to give 1-cyano-3-benzoylpyrrolo[2,1-α]phthalazine (9a) in good yield. Furthermore, a general and convenient one-pot procedure for preparation of pyrrolo[2,1-α]phthalazines (9a-p) was developed by 1,3-dipolar cycloaddition of phthala zinium N-ylides (6a-c) with alkenes (7a-g) in the presence of TPCD." @default.
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- W2951804865 date "2000-09-01" @default.
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- W2951804865 title "Synthesis of pyrrolo[2,1-<i>a</i>]phthalazines by 1,3-dipolar cycloaddition of phthalazinium<i>N</i>-ylides with alkenes in the presence of tetrakis-pyridine cobalt (II) dichromate" @default.
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- W2951804865 doi "https://doi.org/10.1002/jhet.5570370524" @default.
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