Copper-Catalyzed Enantioselective Addition of Styrene-Derived Nucleophiles to Imines Enabled by Ligand-Controlled Chemoselective Hydrocupration
作者:Yang Yang、Ian B. Perry、Stephen L. Buchwald
DOI:10.1021/jacs.6b06299
日期:2016.8.10
The copper-catalyzed intermolecular enantioselectiveaddition of styrenes to imines has been achieved under mild conditions at ambient temperature. This process features the use of styrenes as latent carbanion equivalents via the intermediacy of catalytically generated benzylcopper derivatives, providing an effective means for accessing highly enantiomerically enriched amines bearing contiguous stereocenters
Enantioselective Synthesis of <i>anti</i>-1,2-Diamines by Cu-Catalyzed Reductive Couplings of Azadienes with Aldimines and Ketimines
作者:Xinxin Shao、Kangnan Li、Steven J. Malcolmson
DOI:10.1021/jacs.8b04750
日期:2018.6.13
Here we report highly efficient and chemoselective azadiene-imine reductive couplings catalyzed by (Ph-BPE)Cu-H that afford anti-1,2-diamines. In all cases, reactions take place with either aldimine or ketimine electrophiles to deliver a single diastereomer of product in >95:5 er. The products' diamines are easily differentiable, facilitating downstream synthesis.
在这里,我们报告了由 (Ph-BPE)Cu-H 催化的高效且化学选择性的氮杂二烯-亚胺还原偶联,可提供抗 1,2-二胺。在所有情况下,与醛亚胺或酮亚胺亲电子试剂发生反应,以> 95:5 er 传递单一非对映异构体产物。产品的二胺很容易区分,有利于下游合成。
TBHP/NH<sub>4</sub>I-Mediated Direct N–H Phosphorylation of Imines and Imidates
A direct and practical metal-free N-H phosphorylation has been achieved via the TBHP/NH4I-mediated cross-dehydrogenativecoupling (CDC) reactions between imines/imidates and P(O)H compounds. This transformation provides an efficient synthetic route to the construction of P-N bonds with good functional group compatibility, leading to the formation of N-phosphorylimines and N-phosphorylimidates in up