Alkenylnitro compounds underwent oxidative cyclopropanation by treatment with Fe2O3 in the presence of base and iodine. Bicyclic nitrocyclopropanes were readily prepared in a highly stereoselective manner.
通过在碱和碘存在下用Fe 2 O 3处理烯基硝基化合物进行氧化环丙烷化。双环硝基环丙烷很容易以高度立体选择性的方式制备。
Stereoselective Synthesis of 1-Nitrobicyclo[3.1.0]hexanes and Fused Isoxazoline-<i>N</i>-oxides from Primary Nitro Compounds
The one-step preparation of 1-nitrobicyclo[3.1.0]hexane and bicycloisoxazoline-N-oxide was readily achieved from conjugate adducts of nitro alkenes and allylmalonates by treatment with Ag2O and iodine under basic conditions. We observed that when a primary alkyl group was present at the β-position of the nitro group, bicyclo[3.1.0]hexane was preferentially formed, whereas if a secondary alkyl group