Native amine-directed site-selective C(sp3)-H arylation of primary aliphatic amines with aryl iodides
作者:Pranab K. Pramanick、Zhibing Zhou、Zhenlin Hou、Yufei Ao、Bo Yao
DOI:10.1016/j.cclet.2019.10.034
日期:2020.5
N-unprotected aliphaticamines represents one of the most efficient and straightforward strategies for amine synthesis. Despite some recent progress in this field, the NH2-directed γ-C(sp3)-H arylation of primaryaliphaticamines except α-amino esters remained an unmet challenge. In this report, we established a simple and efficient method for site-selective C(sp3)-H arylation of primaryaliphaticamines by aryl
Pd(II)-catalyzed site-selective β- and γ-C(sp3)–Harylation of primary aldehydes is developed by rational design of L,X-type transient directing groups (TDG). External 2-pyridone ligands are identified to be crucial for the observed reactivity. By minimizing the loading of acid additives, the ligand effect is enhanced to achieve high reactivities of the challenging primary aldehyde substrates. Site
Peptide Modification via N-Terminal-Residue-Directed γ-C(sp<sup>3</sup>)–H Arylation
作者:Zhen-Lin Hou、Feipeng Yuan、Bo Yao
DOI:10.1021/acs.orglett.0c03279
日期:2020.11.6
Postassembly modification of peptides via C(sp3)–H functionalization provides an efficient way to prepare functionalizedpeptides for biological study and pharmaceutical development. In this work, we developed a new method for γ-C(sp3)–H functionalization of aliphatic side chains of N-terminus-unprotected peptides. With the N-terminalresidues as directing groups, a wide range of di-, tri-, tetra-
通过 C(sp 3 )–H 功能化对肽进行组装后修饰提供了一种有效的方法来制备用于生物学研究和药物开发的功能化肽。在这项工作中,我们开发了一种用于N 端未保护肽的脂肪族侧链的γ-C(sp 3 )-H 功能化的新方法。以 N 端残基作为导向基团,广泛的二、三、四和五肽在 N 端的 +2 位进行残基(Val、Ile、Tle)的 C-H 芳基化.
Transannular C–H functionalization of cycloalkane carboxylic acids
作者:Guowei Kang、Daniel A. Strassfeld、Tao Sheng、Chia-Yu Chen、Jin-Quan Yu
DOI:10.1038/s41586-023-06000-z
日期:2023.6.15
new methods for the direct site and diastereoselective synthesis of functionalized carbocycles are highly desirable. In principle, molecular editing by C–H activation offers an ideal route to these compounds. However, the site-selective C–H functionalization of cycloalkanes remains challenging because of the strain encountered in transannular C–H palladation. Here we report that two classes of ligand
Reported herein is an efficient and eco-friendly peri-selective monohydroxylation of naphthalene monoimides (NMIs) to access 4-hydroxy NMIs, which possess multidisciplinary applications.