ChemInform Abstract: N‐(3,4‐Dihydro‐4‐oxoquinazolin‐3‐yl)pyridinium Imides: Aziridinating Agents for Alkenes: Measurement of Rotational Barriers Around Each N‐N Bond in an N‐N‐N System.

Abstract

The synthesis of pyridinium imides (III) by reaction of aminoquinazolinones (I) with the corresponding pyridines is given. These imides, except for the cyano-substituted derivative (IIId), function as aziridinating agents for alkenes (cf. (V)). The rotational barriers around each of the N-N bonds in imide (IIIa) are established based on NMR-measurements. -(ATKINSON, R. S.; BARKER, E.; EDWARDS, P. J.; THOMSON, G. A.; J. Chem. Soc., Chem. Commun. (1995) 7, 727-728; Dep. Chem., Univ., Leicester LE1 7RH, UK; EN)