The endo and exo isomers of 1-(4-isopropyl-3,5-dioxa-8-azabicyclo[5.1.0]octan-8-yl)pyrrolidine-2,5-dione.
The crystal structures of the title compounds, C12H18N2O4, have been determined in order to establish the relative configurations. In both structures, the isopropyl substituent strongly prefers the quasi-equatorial position. Therefore, the exo isomer adopts a dioxepanoaziridine pattern of a chair-chair (CC) conformation and the endo isomer a boat-chair (BC) conformation.
Tripathi
Anil Kumar
AK
Institute for Chemistry, University of Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany.
Bruhn
Clemens
C
Flock
Susanne
S
Frauenrath
Herbert
H