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A Novel Entry to Pyrido[4,3-b]carbazoles: An Efficient Synthesis of Ellipticine

โœ Scribed by Minoru Ishikura; Ayako Hino; Toshikatsu Yaginuma; Isao Agata; Nobuya Katagiri


Book ID
108379532
Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
534 KB
Volume
56
Category
Article
ISSN
0040-4020

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The aza Wtitig-type reaction of iminophosphorane 3, ethyl a-[(triphenylphosphoranylldane) amino]-p-[3-(g-methyl)catbazolyI)acryiafe with Isocyanates leads to the corresponding pyrido[4,3-c]carbazoles 5. Slmilariy. iminophosphorane 8 Undergoes pyrido annelahon by reaction with isocyanales to give the