Thermal cycloaddition reactions of thiocarbonyl compounds. Part 2. 1,3-dipolar cycloaddition reactions of adamantanethione with nitrile oxides, nitrilimines, and diazoalkanes
作者:Tomonori Katada、Shoji Eguchi、Tadashi Sasaki
DOI:10.1039/p19840002641
日期:——
1,3-Dipolar cycloaddition of adamantanethione (1) with nitrile oxides, nitrilimines, and diazoalkanes occurred smoothly to afford regioselective cycloadducts, adamantane-2-spiro-5′-(1′4′,2′-oxathiazolines)(4a–f), adamantane-2-spiro-2′-(1′,3′,4′-thiadiazolines)(11a–d), and (21b), respectively in high yields. These results are discussed on the basis of FMO and steric effects.
1,3-偶氮金刚烷硫酮(1)与一氧化二氮,亚硝胺和重氮烷烃的偶合环加成反应顺利进行,从而提供区域选择性环加成物,金刚烷-2-螺基-5'-(1'4',2'-氧杂唑啉)(4a – f),金刚烷-2-螺-2'-(1',3',4'-噻二唑啉)(11a – d)和(21b)分别以高收率生产。在FMO和空间效应的基础上讨论了这些结果。