Asymmetric transfer hydrogenation of heterocycle-containing acetophenone derivatives using N-functionalised [(benzene)Ru(II)(TsDPEN)] complexes
作者:Jonathan Barrios-Rivera、Yingjian Xu、Guy J. Clarkson、Martin Wills
DOI:10.1016/j.tet.2021.132562
日期:2022.1
The application of enantiomerically-pure ruthenium(II) catalysts containing N - functionalised TsDPEN ligand to the asymmetric transferhydrogenation of 15 examples of α-heterocyclic acetophenone derivatives is reported. Products of up to 99% ee were formed.
报道了含有 N-官能化 TsDPEN 配体的对映体纯钌 (II) 催化剂在 15 个 α-杂环苯乙酮衍生物实例的不对称转移氢化中的应用。形成高达 99% ee 的产物。
10.1055/a-2335-8677
作者:Xie, Liangjun、Chen, Lili、Xu, Senmiao
DOI:10.1055/a-2335-8677
日期:——
enantioselective secondary benzylic C–Hborylation using benzothiazole as the directing group. Various monosubstituted 2-arylalkylbenzo[d]thiazole were well-tolerated, affording the corresponding products in moderate to good yields with good enantioselectivity. The C–B bond in one borylated product could undergo stereospecific transformations to form a series of C–C and C–heteroatom bonds.
Iridium-Catalyzed Asymmetric Borylation of Unactivated Methylene C(sp<sup>3</sup>)–H Bonds
作者:Ronald L. Reyes、Tomohiro Iwai、Satoshi Maeda、Masaya Sawamura
DOI:10.1021/jacs.9b01952
日期:2019.5.1
Herein, we show the highly enantioselective borylation of unactivated methylene C(sp3)-Hbonds in 2-alkylpyridines and 2-alkyl-1,3-azole derivatives using an iridium-BINOL-based chiral monophosphite catalyst system. Quantum chemical calculations using the artificial force induced reaction (AFIR) method suggested that a monophosphite-Ir-tris(boryl) complex generates a narrow chiral reaction pocket where