Aldehydes may be acylated to give R'CH(ON)C(O)R in good yield by the RLi/CO in situ procedure at very low temperatures. Examples are given of ketone acylations which demonstrate the advantages of 1:1 RLi/substrate stoichiometry and the use of lower (−135°C) temperature.
可以通过在非常低的温度下通过RLi / CO原位程序将醛酰化,从而以高收率得到R'CH(ON)C(O)R。给出了
酮酰化反应的实例,这些实例证明了1:1 RLi /底物
化学计量比的优势以及使用较低温度(-135°C)的优势。