Selective Reductive Elimination at Alkyl Palladium(IV) by Dissociative Ligand Ionization: Catalytic C(sp<sup>3</sup>
)−H Amination to Azetidines
作者:Manuel Nappi、Chuan He、William G. Whitehurst、Ben G. N. Chappell、Matthew J. Gaunt
DOI:10.1002/anie.201800519
日期:2018.3.12
A palladium(II)‐catalyzed γ‐C−H amination of cyclic alkyl amines to deliver highly substituted azetidines is reported. The use of a benziodoxole tosylate oxidant in combination with AgOAc was found to be crucial for controlling a selective reductive elimination pathway to the azetidines. The process is tolerant of a range of functional groups, including structural features derived from chiral α‐amino
据报道,钯(II)催化的环状烷基胺的γ-CH氨基化可提供高度取代的氮杂环丁烷。发现苯并恶唑甲苯磺酸盐氧化剂与AgOAc的结合使用对于控制通往氮杂环丁烷的选择性还原消除途径至关重要。该过程可耐受一系列官能团,包括衍生自手性α-氨基醇的结构特征,并导致对映纯氮杂环丁烷的非对映选择性形成。