Abstract Quinolinium Salts, Redox Reactions Quaternary salts of 3-quinolinecarboxamide and 3-quinolinecarbonitrile react after addition of ZnCl2 with ethanol (or 2-propanol) to the corresponding 1,4-dihydroquinoline and ethanol (or propanone). This hydride transfer can be achieved with aluminium-triisopropoxide, too. Lipophilic insertionproducts (4,5,7,8) react with ethanol (or 2-propanal) after ZnCl2 addition to quinolinium-alcoxides, and then to the 1,4-dihydro-quinoline and ethanal (or propanone).
Aus 3‐Chinolincarboxamid‐Salzen 1 entstehen auf Zusatz der äquimolaren Menge Kalium‐tert‐butylat bei −45°C Cyclotetrakondensate 2, mit 1,2‐Dihydrochinolinstruktur.
Abstract Carboxamides react under basic conditions with quaternary 3-cyanoquinolinium salts to give stable insertion products with 1,2-or 1,4-dihydroquinoline structure. Six examples are given.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.