1: butanone With Me3SiCH2Br; dimethyl sulfoxide in acetonitrile
1 h; Inert atmosphereCooling with ice;
2: potassium isopropyl xanthate in acetonitrile
T=20°C; 1 h;
3: With perchloric acid in diethyl ether; chloroform; water
1 h; Reflux;
参考文献
The University of Tokyo
Patent: EP2256111 A1, 2010 ;
Location in patent: Page/Page column 13 ;