作者:A. O. Kas'yan、D. V. Karpenko、L. I. Kas'yan
DOI:10.1007/s11178-006-0035-7
日期:2005.12
Reactions of previously known and newly synthesized N-(bicyclo[2.2.1]hept-5-en-endo-2-ylmethyl)arenesulfonamides with monoperoxyphthalic acid generated in situ from phthalic anhydride and 30% hydrogen peroxide lead mostly to the corresponding N-arylsulfonyl-exo-2-hydroxy-4-azatricyclo[4.2.1.03,7]nonanes (azabrendanes). In some cases, N-(exo-5,6-epoxybicyclo[2.2.1]hept-5-en-exo-2-ylmethyl)arenesulfonamides were isolated as the only products or mixtures of alternative oxidation products were obtained. The presence of electron-acceptor nitro groups in the benzene ring and bulky substituents, primarily in the ortho position, is considered to be a structural factor preventing the primary oxidation products (epoxy derivatives) from undergoing heterocyclization.
以前已知的和新合成的N-(bicyclo[2.2.1]hept-5-en-endo-2-ylmethyl)芳基磺酰胺与现场生成的单过氧邻苯二甲酸的反应,主要是通过邻苯二甲酸酐和30%的过氧化氢反应生成的,主要生成相应的N-芳基磺酰基-exo-2-羟基-4-氮杂三环[4.2.1.03,7]壬烷(氮杂布伦丹)。在某些情况下,N-(exo-5,6-环氧双环[2.2.1]庚-5-烯-exo-2-ylmethyl)芳基磺酰胺被分离为唯一产物,或获得了其他氧化产物的混合物。苯环中存在的电子受体硝基基团和主要位于邻位的笨重取代基被认为是阻止主要氧化产物(环氧衍生物)发生杂环化反应的结构因素。