使用阳离子铱/( R )-binap络合物对1,1-二取代烯烃进行催化对映选择性加氢芳基化,以高产率和高对映选择性得到相应的加合物。被杂芳族定向基团取代的芳烃的反应进行以线性选择性地产生加成产物。甲代烯丙胺衍生物是获得高对映选择性的良好受体。带有马来酰亚胺部分的加合物很容易转化为β-手性胺衍生物,而不损失对映体纯度。
The Claisen rearrangement of allyl phenyl ethers with exceptionally bulky, oxygenophilic methylaluminum bis(4-bromo-2,6-di-tert-butylphenoxide) (reagent A) is found to exhibit an unusual behavior not observable in the ordinary thermal and Lewis acid-induced rearrangement.
Electrochemical selenofunctionalization of unactivated alkenes: access to β-hydroxy-selenides
作者:Anil Balajirao Dapkekar、Gedu Satyanarayana
DOI:10.1039/d4ob00105b
日期:——
2-(2-hydroxy-2-methyl-3-(arylselanyl)propoxy)benzoate starting from aryl allyl ethers/allylbenzoates and diaryl diselenides under additive-free electrochemical conditions. This environmentally friendly method was achieved through constant current electrolysis in an undivided cell setup under acid, oxidant, or catalyst-free conditions. Additionally, this technique enabled the synthesis of a variety of β-hydroxy selenides