CF Bond Activation of Unactivated Aliphatic Fluorides: Synthesis of Fluoromethyl-3,5-diaryl-2-oxazolidinones by Desymmetrization of 2-Aryl-1,3-difluoropropan-2-ols
作者:Günter Haufe、Satoru Suzuki、Hiroyuki Yasui、Chisato Terada、Takashi Kitayama、Motoo Shiro、Norio Shibata
DOI:10.1002/anie.201207304
日期:2012.12.3
oxazolidinones 1 were synthesized through the desymmetrization of unactivated aliphatic difluorides by Si‐induced catalytic CF bond‐cleavage using BSA/CsF (BSA=bis(trimethylsilyl)acetamide). The direct transformation of 2 with isocyanates into 1 by cascade carbamoylation/cyclization, in which cyclization is induced by Na‐assisted CF bond activation, was also achieved.
如何失去氟:生物学相关的恶唑烷酮1是通过未活化的脂肪族二氟化物的经Si-诱导催化C中的合成desymmetrization 使用BSA / CSF(BSA =双(三甲基硅烷基)乙酰胺)的F键的裂解。还实现了通过级联氨基甲酰基化/环化将异氰酸酯2直接转化为1,其中环化是由Na辅助的CF键激活而引起的。