MgO provided original spirooxazolidines or spirooxathiazolidines in reasonable yields. No correlation between ‘anomeric’ stereochemistry and insertion efficiency was found for the conversion of carbamate derivatives whereas amination reactions of the corresponding sulfamate esters were found to be strongly dependent on the anomeric configuration.
据报道分子内
金属催化了C-糖苷中假异头CH键的胺化反应。α,β-的治疗ç -carbamoyloxymethyl-或β- Ç -sulfamoyloxymethyl苷用的Rh 2(OAc)4,岛(OAC)2和MgO在合理的产率提供原始spirooxazolidines或spirooxathiazolidines。对于
氨基甲酸酯衍
生物的转化,未发现“异头”立体
化学与插入效率之间的相关性,而发现相应的
氨基磺酸酯的胺化反应强烈依赖于异头构型。