中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | phenyl-thiophosphonigsaeure-O-allylester | 104284-00-6 | C9H11OPS | 198.225 |
Vinylbenziodoxolones (VBX) were demonstrated as efficient, metal-free
The first example of phosphine-catalyzed α-umpolung addition of nucleophiles to allenoates is described, which features the use of δ-acetoxy allenoate to generate a 3-phosphonium-2,4-dienoate intermediate, thus facilitating the α-umpolung addition of nucleophiles.