Untersuchungen an 1,3‐Dicarbonylverbindungen, 25. Mitt. Pyrano[3,2‐b]indol‐4(5H)‐on und 9‐Chlor‐1‐oxo‐1H‐pyrrolo[1,2‐a]indol‐2‐carbaldehyd

Abstract

Görlitzer und MichelsArch. Pharm. residue was treated with 25ml of water and unreacted N-phenylthiourea filtered. The filtrate was evaporated i.vac. The residue after recrystallization from methanol gives 3,3g of 9a (table 3,2). Similarly comp. 9b,c were obtained.Ausgehend von der 1,3-Dicarbonylverbindung 1 gelingt durch Umsetzung des BF,-Chelats 2 mit POCIflMF die Darstellung der Titelsubstanzen 5 und 9 . 5 wird durch das Thion 6 und das Oxonol7, 9 durch die 1 ,CDihydropyndine 10 charakterísiert. l,3-Dicarbonyl Compounds, XXV Pyrano[3,2-b]indole-4(5H)-one and 9-chloro-~-oxo-1~- pyrroloIl,2-s]indole-2-carbaidehydeOn treatment with POC13/DMF the BF2 chelate 2, obtained from the 1,3-dicarbonyl compound 1, yields the title substances 5 and 9. Compound 5 is characterized by way of the thione 6 and the oxonol 7, compound 9 by way of the l,4-dihydropyndines 10.