ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Unusual Course of the Reaction of α-Acyl-γ-butyrolactones with 2-(2,6-Dihalogenophenylimino)imidazolidinesHeating of α-acyl-γ-butyrolactones 1 with 2-(2,6-dihalogenophenylimino)imidazolidines 5 in HMPT unexpectedly leads to 7-halogeno-2-,6-dihydro-4-alkyl-5,6-ethano-1H- [1,4]diazepino-[1,7-a]benzimidazoles 7 in low yields. The structures of 7 are derived from spectroscopic data, oxidative degradation to benzimidazole derivative 9 and an X-ray structure analysis. A possible pathway for the formation of 7 is discussed.
Notes:
α-Acyl-γ-butyrolactone 1 liefern beim Erhitzen mit 2-(2,6-Dihalogenphenylimino)imidazolidinen 5 in HMPT unerwartet in geringen Ausbeuten 7-Halogen-2,6-dihydro-4-alkyl-5-,6-ethano-1H-[1,4]diazepino[1,7-a]benzimidazole 7, deren Struktur durch die spektroskopischen Daten, Abbauversuche und eine Röntgenstrukturanalyse abgeleitet wird. Der mögliche Bildungsweg dieser Verbindungen wird diskutiert.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19801130903
