DBU (chemistry)
Encyclopedia
1,8-Diazabicyclo[5.4.0]undec-7-ene, or more commonly DBU, is a chemical compound
and belongs to the class of amidine
compounds. It is used in organic synthesis
as a catalyst and complexing ligand
and a strong (pKa = 24.34 in acetonitrile) non-nucleophilic base.
It is used as a curing agent for epoxy; it is used as a protecting agent for the synthesis of cephalosporin
. It is used in fullerene
purification with trimethylbenzene
(it reacts to C70 and higher fullerenes but not to C60 fullerenes); and it is also used as a catalyst for polyurethane
. It has a strong catalyst effect for the reactions of alicyclic and aliphatic isocyanates.
Chemical compound
A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...
and belongs to the class of amidine
Amidine
Amidines are a class of oxoacid derivatives.The oxoacid from which an amidine is derived must be of the form RnEOH, where R is a substituent...
compounds. It is used in organic synthesis
Organic synthesis
Organic synthesis is a special branch of chemical synthesis and is concerned with the construction of organic compounds via organic reactions. Organic molecules can often contain a higher level of complexity compared to purely inorganic compounds, so the synthesis of organic compounds has...
as a catalyst and complexing ligand
Ligand
In coordination chemistry, a ligand is an ion or molecule that binds to a central metal atom to form a coordination complex. The bonding between metal and ligand generally involves formal donation of one or more of the ligand's electron pairs. The nature of metal-ligand bonding can range from...
and a strong (pKa = 24.34 in acetonitrile) non-nucleophilic base.
It is used as a curing agent for epoxy; it is used as a protecting agent for the synthesis of cephalosporin
Cephalosporin
The cephalosporins are a class of β-lactam antibiotics originally derived from Acremonium, which was previously known as "Cephalosporium".Together with cephamycins they constitute a subgroup of β-lactam antibiotics called cephems.-Medical use:...
. It is used in fullerene
Fullerene
A fullerene is any molecule composed entirely of carbon, in the form of a hollow sphere, ellipsoid, or tube. Spherical fullerenes are also called buckyballs, and they resemble the balls used in association football. Cylindrical ones are called carbon nanotubes or buckytubes...
purification with trimethylbenzene
Trimethylbenzene
Trimethylbenzene can refer to any of three isomeric chemical compounds:* 1,2,3-Trimethylbenzene* 1,2,4-Trimethylbenzene * Mesitylene...
(it reacts to C70 and higher fullerenes but not to C60 fullerenes); and it is also used as a catalyst for polyurethane
Polyurethane
A polyurethane is any polymer composed of a chain of organic units joined by carbamate links. Polyurethane polymers are formed through step-growth polymerization, by reacting a monomer with another monomer in the presence of a catalyst.Polyurethanes are...
. It has a strong catalyst effect for the reactions of alicyclic and aliphatic isocyanates.