Oxidation of 1-acyl-2-naphthol oximes: peri - and o -cyclisation and spiro cyclodimerisation of naphthoquinone nitrosomethide intermediates
作者:Paraskevi Supsana、Petros G Tsoungas、André Aubry、Stavroula Skoulika、George Varvounis
DOI:10.1016/s0040-4020(01)00189-2
日期:2001.4
The oxidation of 2-hydroxynaphthaldehyde oxime with lead(IV) acetate (LTA) gave a mixture of naphtho[1,8-de][1,2]oxazine and a spiro dimer. LTA oxidation of 6-bromo (or nitro)-2-hydroxynaphthaldehyde oximes provided only spiro dimers. Similar treatment of (2-hydroxy-1-naphthyl)keto oximes with LTA gave naphtho[1,8-de][1,2]oxazines and benzo[cd]indol-3(1H)-ones. Low temperature oxidation of 1-(2-hy
用乙酸铅(IV)(LTA)氧化2-羟基萘甲醛肟,得到萘并[1,8- de ] [1,2]恶嗪和螺二聚体的混合物。6-溴(或硝基)-2-羟基萘甲醛肟的LTA氧化仅提供螺二聚体。用LTA类似处理(2-羟基-1-萘基)酮肟得到萘[1,8- de ] [1,2]恶嗪和苯并[ cd ]吲哚-3(1H)-酮。1-(2-羟基-1-萘基)丙烷-1-酮肟的低温氧化制得2-乙基苯并[ cd ]吲哚-3(1 H)-一和1-乙基萘[1,2- d ]异恶唑- 2氧化物。围-和Ø -Naphthoquinone nitrosomethides被援引作为经历中间体周和邻环化和分子间环二聚。