Synthesis of 1,2‐diaryl‐2‐imidazolines
- 1 August 1970
- journal article
- research article
- Published by Wiley in Journal of Heterocyclic Chemistry
- Vol. 7 (4) , 791-798
- https://doi.org/10.1002/jhet.5570070407
Abstract
Polyphosphoric acid and N‐aryl‐N′‐benzoylethylenediamines in a type of Bischler‐Napieralski reaction afforded 1,2‐diaryl‐2‐imidazolines in good yields, rather than the 2,3‐dihydro‐1H‐[1,4]‐benzodiazepines. Blocking of the amino nitrogen by a methyl or ethyl group, to avoid imidazoline formation, gave starting material rather than the expected dihydrobenzodiazepine. When p‐tosyl was the blocking group, imidazoline was again the only product isolated. Analytical and spectroscopic data of several unreported 1,2‐diaryl‐2‐imidazolines are presented.Keywords
This publication has 5 references indexed in Scilit:
- Notes- The Isomerization of Some Aziridine Derivatives. III. A New Synthesis of 2-ImidazolinesThe Journal of Organic Chemistry, 1960
- SUBSTITUTED IMIDAZOLES AND 2-IMIDAZOLINESThe Journal of Organic Chemistry, 1947
- Aminophenyl-2-oxazolines as Local AnestheticsJournal of the American Chemical Society, 1937
- Some Alkyl-glyoxalidines1Journal of the American Chemical Society, 1935
- Ueber eine Synthese von DihydroglyoxalinenEuropean Journal of Inorganic Chemistry, 1895