Related Experiment Video
Updated: Feb 9, 2026

08:38
Targeted DNA Methylation Analysis by Next-generation Sequencing
Published on: February 24, 2015
38.0K
Selective Methylation of Arenes: A Radical C-H Functionalization/Cross-Coupling Sequence.
Fabien Serpier1, Fei Pan1, Won Seok Ham1,2
1Department Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany.
Angewandte Chemie (International Ed. in English)
|June 13, 2018
Summary
A new method enables selective methylation of arenes using C-H functionalization and nickel catalysis. This approach provides efficient access to para-methylated compounds, including for late-stage pharmaceutical modification.
Area of Science:
- Organic Chemistry
- Catalysis
- Synthetic Methodology
Background:
- Direct functionalization of C-H bonds is a key goal in organic synthesis.
- Methylation of aromatic compounds is crucial for modifying molecular properties.
Purpose of the Study:
- To develop a novel, selective, and nonchelation-assisted method for arene methylation.
- To enable rapid access to para-methylated arenes.
Main Methods:
- Combination of C-H functionalization with nickel-catalyzed cross-coupling.
- Development of a selective methylation protocol for arenes.
Main Results:
- Achieved selective, nonchelation-assisted methylation of arenes.
- Demonstrated high para selectivity in the methylation reaction.
- Showcased the utility of the method for late-stage methylation of pharmaceuticals.
Conclusions:
- The developed method offers an efficient route to para-methylated arenes.
- This transformation is valuable for late-stage functionalization in drug discovery.
Related Concept Videos
Crossing Over
172.2K
Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
172.2K
Crossing Over
6.6K
Crossing over is the exchange of genetic information between homologous chromosomes during prophase I of meiosis I. Genetic recombination gives rise to allelic diversity in the newly formed daughter cells. In humans, crossing over produces genetically distinct haploid egg and sperm cells that undergo fertilization to produce unique offspring. Before cell division starts, the germ cell’s chromosome(s) undergo duplication in the S phase of the cell cycle. As the cells enter prophase I,...
6.6K
Monohybrid Crosses
239.6K
Overview
239.6K
Cross-Sectional Research
12.7K
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
12.7K
Radical Reactivity: Nucleophilic Radicals
2.7K
Radicals adjacent to electron-donating groups are called nucleophilic radicals. These radicals readily react with electrophilic alkenes. The SOMO–LUMO interactions are the driving force for the reaction, where the high-energy SOMO of the electron-rich, nucleophilic radicals interacts with the low-energy LUMO of the electron-deficient, electrophilic alkenes. Such SOMO–LUMO interactions are the basis of reactive radical traps, affecting the selectivity in radical reactions. For...
2.7K
Radicals
747
Roots, often written as radicals, identify the quantity that must be raised to a specific exponent to produce a given value. A radical expression consists of two main components: the radicand, which is the value placed inside the root symbol, and the index, which indicates the degree of the root being taken. The notation n√a indicates the principal nth root of a. If n equals 2, the operation is the square root, while n = 3 defines the cube root. When n is even, a negative radicand does...
747

