作者:Ferrid Hadj-Abo、Stefan Bienz、Manfred Hesse
DOI:10.1016/s0040-4020(01)85341-2
日期:1994.1
The ring enlargement of 2-nitrocyclododecanone (1, n = 1) to methyl 2-hydroxy-5-nitrocyclotetradecanecarboxylate (4, n = 1) via 12-hydroxy-1-nitrobicyclo[9.3.1]pentadecane-12-one(2, n = 1) delivered after further transformations in good yield cyclotetradecane-1,4-dione (12). Treatment of this compound with para-toluene sulfonic acid at a Dean-Stark water trap afforded [10](2,5)furanophane (20). In
通过2-羟基-1-硝基双环[9.3.1]十五烷-12-one(2)将2-硝基环十二烷酮(1,n = 1)扩环为2-羟基-5-硝基环十四烷甲酸甲酯(4,n = 1)。,n = 1)在进一步转化后以高产率的环十四烷-1,4-二酮(12)传递。在迪安-斯达克分水器上用对甲苯磺酸处理该化合物,得到[10](2,5)呋喃喃酮(20)。在氨或伯胺的存在下,相应的[10](2,5)pyrrolophanes 15 - 19获得。[10](2,5)噻吩的相应制备方法(21),但几种硫化剂对12的作用却不太成功。仅获得少量的不纯物21。