Thermal cycloaddition reactions of thiocarbonyl compounds. Part 3. A novel [4 + 2] cycloaddition reaction of thiocarbonyl compounds with o-quinone methanides
作者:Tomonori Katada、Shoji Eguchi、Toshiyuki Esaki、Tadashi Sasaki
DOI:10.1039/p19840002649
日期:——
Thermal cycloaddition reactions of adamantanethione (3) and thiobenzophenone (8a) with o-quinone methanides such as the o-benzoquinone methanides (2a–g) and o-naphthoquinone methanides (2h–j) occurred smoothly at 180–200 °C to afford, regioselectively, the adamantane-2-spiro-2′-[1,3]benzoxathiines (4a–g), the naphth[1,3]oxathiines (4a–g), and the naphty[1,3]oxathiines(4h–j), and the 2,2-diphenyl-1
金刚烷硫酮(3)和硫代二苯甲酮(8a)与邻苯二甲甲烷甲烷化物(如邻苯二甲酮甲烷化物(2a – g)和邻萘萘甲磺酸甲酯(2h – j))的热环加成反应在180–200°C平稳进行,区域选择性,金刚烷-2-螺-2' - [1,3] benzoxathiines(4A -克),则吩[1,3] oxathiines(4A -克),并将naphty [1,3] oxathiines(4H – j),2,2-二苯基-1,3-苯并噻吨(9a)和(9g),所有新颖的[4 + 2]环加合物,收率良好。