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ChemInform Abstract: A Novel Reaction Promoted by Hydrogen Polyiodides (HI2n+1): Cyclization of 1-(1H-3-Indolyl)-4-(methylthio)-2-(p-tolylsulfonyl)-1,3-butadienes Accompanied with 1,2-Sulfonyl Migration.

✍ Scribed by Shoji Matsumoto; Takuya Kishimoto; Katsuyuki Ogura

Publisher: John Wiley and Sons
Year: 2002
Weight: 37 KB
Volume: 33
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200226125

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ChemInform Abstract: A Novel and Regioselective Pyridine-Ring Formation by Lewis Acid-Induced Cyclization of 2-(N-Allylbenzylamino)-3-[2,2-bis(ethoxycarbonyl)vinyl]pyrido [1,2-a]pyrimidin-4(4H)-one.

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A Novel and Regioselective Pyridine-Ring Formation by Lewis Acid-Induced Cyclization of 2-(N-Allylbenzylamino)-3-[2,2bis(ethoxycarbonyl)vinyl]pyrido [1,2-a]pyrimidin-4(4H)-one. -The title pyridine-ring formation is achieved via an intermediately obtained iminium betaine according to the "tert-amino