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Sigma-Aldrich

exo-5-Norbornenecarboxylic acid

97%

Synonym(s):

(1R,2S,4R)-Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, NC

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About This Item

Empirical Formula (Hill Notation):
C8H10O2
CAS Number:
Molecular Weight:
138.16
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

97%

form

solid

mp

40-44 °C

SMILES string

OC(=O)[C@@H]1C[C@@H]2C[C@H]1C=C2

InChI

1S/C8H10O2/c9-8(10)7-4-5-1-2-6(7)3-5/h1-2,5-7H,3-4H2,(H,9,10)/t5-,6+,7+/m0/s1

InChI key

FYGUSUBEMUKACF-RRKCRQDMSA-N

General description

Exo-5-norbornenecarboxylic acid is a bicyclic compound that has potential applications in the field of material science due to its unique chemical properties. It is a versatile building block for the synthesis of various functional materials, including polymers, dendrimers, and self-assembled monolayers. It can be used to modify surfaces or to functionalize nanoparticles, influencing their optical, magnetic, or electronic properties. It is also often used in ring-opening metathesis polymerization reactions to form polymers with controlled molecular weight and structure. Additionally, exo-5-norbornenecarboxylic acid can function as a ligand for coordination chemistry and catalysis.

Application

Exo-5-norbornenecarboxylic acid can be used as:
  • A starting material in the synthesis of the metathesis polymer via a ring-opening metathesis polymerization (ROMP) reaction of the ester of exo-5-norbornenecarboxylic acid and 1,1′-bi-2-naphthol.
  • A monomer in the preparation of thin films via surface-initiated polymerization process. The resulting thin film serves as a template for selective deposition and etching of metal oxides, which is of significant importance in the microelectronic industry.
exo-5-Norbornenecarboxylic acid can be used as a precursor in the synthesis of:
  • Different crosslinkers for ring-opening metathesis polymerization.
  • Norbornene-functionalized monomers, which are used to make poly(norbornene)s via ring-opening metathesis polymerization (ROMP).
  • Hydrolytically cleavable and hydrolytically stable functionalized macromonomers for hydrogel preparation.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

>230.0 °F

Flash Point(C)

> 110 °C


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Macromolecular rapid communications, 34(23-24), 1838-1843 (2013-11-12)
This communication describes photoresponsive gels, prepared using ring-opening metathesis polymerization (ROMP), that dissolve upon irradiation with ultraviolet light. Exposure of mixtures of norbornene-type ROMP monomers and new photoreactive cross-linkers comprising two norbornene units bound through a chain containing o-nitrobenzyl esters
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European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 127, 194-203 (2018-02-23)
Reducing burst effects, providing controlled release, and safeguarding biologics against degradation are a few of several highly attractive applications for microgels in the field of controlled release. However, the incorporation of proteins into microgels without impairing stability is highly challenging.

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