Pd(<scp>ii</scp>)-Catalyzed arylation of unactivated methylene C(sp<sup>3</sup>)–H bonds with aryl halides using a removable auxiliary
作者:Qi Zhang、Xue-Song Yin、Sheng Zhao、Sheng-Long Fang、Bing-Feng Shi
DOI:10.1039/c4cc03615h
日期:——
Pd(ii)-catalyzed arylation of methylene C(sp3)–H bonds with ArBr directed by our newly developed PIP auxiliary was reported.
Pd(ii)催化的甲基C(sp3)-H键芳基化反应,由我们新开发的PIP辅助引导。
Pd(II)-Catalyzed Enantioselective Alkynylation of Unbiased Methylene C(sp<sup>3</sup>)–H Bonds Using 3,3′-Fluorinated-BINOL as a Chiral Ligand
作者:Ye-Qiang Han、Yi Ding、Tao Zhou、Sheng-Yi Yan、Hong Song、Bing-Feng Shi
DOI:10.1021/jacs.9b01124
日期:2019.3.20
Pd(II)-catalyzed enantioselective alkynylation of unbiased methylene β-C(sp3)-H bonds is reported. The readily accessible and tunable BINOL derivatives are used as chiralligands in C-Hactivation for the first time. 3,3'-Fluorinated-BINOL proved crucial in determining both the reactivity and enantioselectivity. A wide range of carboxylic acid derivatives are well tolerated with high enantioselectivities (up to
Pd(<scp>ii</scp>)-Catalyzed enantioselective arylation of unbiased methylene C(sp<sup>3</sup>)–H bonds enabled by a 3,3′-F<sub>2</sub>-BINOL ligand
作者:Xu Yang、Meng-Xue Jiang、Tao Zhou、Ye-Qiang Han、Xue-Tao Xu、Kun Zhang、Bing-Feng Shi
DOI:10.1039/d1cc01690c
日期:——
Palladium-catalyzed asymmetric functionalization of unbiased methylene C(sp3)–H bonds is a long-standing challenge. Here, we report a Pd(II)-catalyzed highly enantioselective arylation of unbiased methylene C(sp3)–H bonds enabled by a strongly coordinating bidentate 2-pyridinylisopropyl (PIP) directing group and an easily accessible 3,3′-F2-BINOL chiral ligand. The use of aryl iodides with the combination
Pd(ii)-catalyzed alkoxylation of unactivated C(sp3)–H and C(sp2)–H bonds using a removable directing group: efficient synthesis of alkyl ethers
作者:Fa-Jie Chen、Sheng Zhao、Fang Hu、Kai Chen、Qi Zhang、Shuo-Qing Zhang、Bing-Feng Shi
DOI:10.1039/c3sc51993g
日期:——
The Pd(II)-catalyzed alkoxylation of unactivated C(sp3)–H and C(sp2)–Hbonds using a new bidentate directing group has been developed. Alkoxylation occurs selectively at the β position with broad substrate scope and high tolerance of functional groups (chloro, cyano, ether, ester, olefin, amino, etc.). Besides alkoxylation of the β-C–H bonds, γ-alkoxylation of C(sp2)–Hbonds could also be achieved