O-(Trimethylsilyl)oxime ethers, generated in situ by reaction of aldehydes and O-(trimethylsilyl)hydroxylamine in lithium perchlorate/diethyl ether solution, are highly reactive species and undergo facile reaction with silylated nucleophiles, such as trimethylsilyl cyanide and the binary reagent (MeO)3P/Me3SiCl, to give α-substituted hydroxylamine derivatives.
O-(三甲基
硅基)
肟醚是醛与O-(三甲基
硅基)
羟胺在
高氯酸锂/
乙醚溶液中反应原位生成的,是高活性物质,容易与甲
硅烷基化亲核试剂(如三甲基
硅氰化物)和二元试剂发生反应。 (MeO)3P/Me3SiCl,得到α-取代的
羟胺衍
生物。