Related Experiment Video
Updated: Feb 15, 2026

Synthesis and Characterization of Amphiphilic Gold Nanoparticles
Published on: July 2, 2019
An amphiphilic, catalytically active, vitamin B12 derivative
M Giedyk1, S N Fedosov, D Gryko
1Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. dorota.gryko@icho.edu.pl.
Researchers activated primary amides using vitamin B12 and N,N-dimethylformamide dimethyl acetal, creating cobalester. This novel amphiphilic cobalamin derivative shows promise as a catalyst for carbon-carbon bond formation reactions.
Area of Science:
- Organometallic Chemistry
- Catalysis
- Biochemistry
Background:
- Vitamin B12 (cobalamin) is a vital biomolecule with unique redox properties.
- Amide activation is crucial for various chemical transformations.
- Developing novel catalysts for C-C bond formation is a key area in synthetic chemistry.
Purpose of the Study:
- To synthesize a novel amphiphilic cobalamin derivative.
- To explore the catalytic potential of this new derivative in C-C bond forming reactions.
Main Methods:
- Reaction of vitamin B12 with N,N-dimethylformamide dimethyl acetal.
- Utilized methanol (MeOH) as a nucleophile for amide activation.
- Characterization of the resulting cobalamin derivative.
Main Results:
- Successfully synthesized cobalester, the first amphiphilic cobalamin derivative.
- Cobalester exhibits a unique combination of redox properties and solubility.
- The amphiphilic nature and redox activity suggest potential catalytic applications.
Conclusions:
- Cobalester represents a new class of cobalamin derivatives with tunable solubility.
- The unique properties of cobalester make it a promising candidate for catalysis in C-C bond forming reactions.
- This work expands the utility of vitamin B12 in synthetic organic chemistry.
More Related Videos
06:47Isolation of Mesenchymal Stem Cells from Human Alveolar Periosteum and Effects of Vitamin D on Osteogenic Activity of Periosteum-derived Cells
Published on: May 4, 2018
08:01Synthesis of Monocyte-targeting Peptide Amphiphile Micelles for Imaging of Atherosclerosis
Published on: November 17, 2017
Related Concept Videos
Vitamins
Turnover Number and Catalytic Efficiency
Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion....
Catalytically Perfect Enzymes
Most enzymes...
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
Mineral, Vitamin and Water Absorption