Anellierte Thiopyrone, 1. Mitt. Thiopyrano[3,2-b]indol-4(5H)-one, Thiopyrano[2,3-b]indol-4(9H)-one als Nebenprodukte
✍ Scribed by Klaus Görlitzer; Detlef Hölscher
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 338 KB
- Volume
- 319
- Category
- Article
- ISSN
- 0365-6233
No coin nor oath required. For personal study only.
✦ Synopsis
Eingegangen am 3. Dezember 1984 Die 3-(3-Indolyl-thio)-acryísäuren 3 cyclisieren mit Polyphosphorsäure (PPA) zu den isomeren Titelverbindungen 4 und 5, die als Sulfone, Thione und Oxonole charakterisiert werden, Fused Thiopyrones, I: Thiop~~o[3,2-b]indol-4(5H)-ones, Thiopyrano[2,3-b]i(9~-ones as Byproducts The 3-(3-indolylthio)acrylic acids 3 cyclize with polyphosphoric acid (PPA) to yield the isomeric title compounds 4 and 5, which are characterized by their sulfones, thiones and oxonol dyes. ** Herrn Prof. Dr. F. Eiden mit den besten Wiinschen zum 60. Geburtstag gewidmet.
📜 SIMILAR VOLUMES
Eingegangen am 31. Oktober 1986 Pyrano[ 3,4-blindolones 3a-d are available from a-ethoxyalyllactones la, c and disubstituted hydrazines 2a, b without isolation of intermediates. In a two-phase system, however, the intermediate hydrazones 4a, c can be isolated. Conversion of 3a-d into P-carbolines wa