NMR/NOE elucidation of the stereostructure of cycloadducts of acetonitrile oxide with norbornane/ene-fused dihydro-oxazines
作者:Pál Sohár、Géza Stájer、Angela E. Szabó、Gábor Bernáth
DOI:10.1002/mrc.1260290713
日期:1991.7
Norbornane‐di‐endo‐ and ‐di‐exo‐fused dihydro‐1,3‐oxazines underwent cycloaddition with in situ prepared acetonitrile oxide to yield tetracyclic 1,2,4‐oxadiazolines. Either the CC bond of the double dipolarophiles with the norborneneskeleton was saturated to give isoxazoline regioisomers, or a second molecule of the dipole added to the CN bond, resulting in the formation of a bis‐adduct. The structures