Regioselective and Stereospecific Cross-Coupling of Primary Allylic Amines with Boronic Acids and Boronates through Palladium-Catalyzed CN Bond Cleavage
作者:Man-Bo Li、Yong Wang、Shi-Kai Tian
DOI:10.1002/anie.201109171
日期:2012.3.19
The NH2 group serves as an effective leaving group in the palladium‐catalyzed regioselective and stereospecific title reaction (see scheme). The reaction works well with aryl‐ and alkenylboronic acids and aryl‐, alkenyl‐, allyl‐, and benzylboronates, and complete transfer of chirality has been achieved when using α‐chiral primary allylic amines as the allylic electrophiles.
Nickel-catalyzed reductive allylation of aryl bromides with allylic acetates
作者:Xiaozhan Cui、Shulin Wang、Yuwei Zhang、Wei Deng、Qun Qian、Hegui Gong
DOI:10.1039/c3ob40232k
日期:——
This paper highlights Ni-catalyzed allylation of electron-rich aryl bromides with a variety of substituted allyliccarbonates using zinc as the terminal reductant, affording E-alkenes regioselectively in good to excellent yields by the addition of aryl to the less hindered allylic carbon. The electron-deficient aryl bromides and chlorides are also highly efficient coupling partners.
Enantiospecific, Nickel-Catalyzed Cross-Couplings of Allylic Pivalates and Arylboroxines
作者:Harathi D. Srinivas、Qi Zhou、Mary P. Watson
DOI:10.1021/ol5016724
日期:2014.7.3
We have developed an enantiospecific, nickel-catalyzed cross-coupling of unsymmetric 1,3-disubstituted allylic pivalates with arylboroxines. The success of this reaction relies on the use of BnPPh2 as a supporting ligand for the nickel(0) catalyst and NaOMe as a base. This method shows excellent functional group tolerance and broad scope in both the allylic pivalate and arylboroxine, enabling the preparation of 1,3-diaryl allylic products in high yields with excellent levels of regioselectivity and stereochemical fidelity.