2-Ethyl-4,5-dihydro-1,3-oxazole

Basic Information

View in Editor

CAS Number

10431-98-8

Molecular Formula

C5H9NO

Molecular Weight

99.13 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Ethers

Basic Chemical Raw Materials Organic Chemicals Heterocyclic Compounds

Pharmaceutical Chemicals Pharmaceutical Intermediates Heterocyclic Intermediates

Basic Physical Properties

Melting Point

−62 °C

Boiling Point

128°C

Water Solubility

MISCIBLE

Refractive Index

n20/D 1.437(lit.)

SMILES

View in Editor

CCC1=NCCO1

InChI

InChI=1S/C5H9NO/c1-2-5-6-3-4-7-5/h2-4H2,1H3

InChIKey

NYEZZYQZRQDLEH-UHFFFAOYSA-N

LogP

0.8251000000000001

Topological Polar Surface Area

21.59 Å²

Hydrogen Bond Donor/Acceptor

0 / 2

Complexity

88.1

Safety Information

View Safety Information

Hazard Statement

H226 Flammable liquid and vapor
Flammable liquids

Hazard Class

Class 3 Class 3

Sensitiveness

Air Sensitive

Synonyms & References

English

EINECS 233-912-4
FT-0612270
A800954
E0373
2-Ethyl-4,5-dihydro-1,3-oxazole #
2-Ethyl-2-oxazoline, >=99%
10431-98-8
AKOS015912733
25805-17-8
2-Ethyl-4,5-dihydro-1,3-oxazole
InChI=1/C5H9NO/c1-2-5-6-3-4-7-5/h2-4H2,1H
NS00015772
SY011237
NSC 136557
UNII-B8CD92T4P5
FT-0699359
MFCD00005302
NSC136557
2-Ethyl-4,5-dihydro-oxazole
2-Oxazoline, 2-ethyl-
ethyl oxazoline
2-Ethyl-2-oxazoline
E78873
Oxazole,5-dihydro-
W-110272
Oxazole, 2-ethyl-4,5-dihydro-
2-Ethyloxazoline
B8CD92T4P5
NSC-136557
F0001-0097
starbld0019600

MDL Number

MFCD00005302

Customs Code

2934999090

FAQ

What are the physical and chemical properties of 2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8)?

2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8) is a colorless liquid with a molecular weight of approximately 118.19 g/mol. It has a slight odor and is practically insoluble in water but soluble in organic solvents like ethanol and acetone. It is slightly acidic and can undergo nucleophilic substitution reactions. Its boiling point is around 120°C, and it is highly flammable.

How is 2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8) typically synthesized?

2-Ethyl-4,5-dihydro-1,3-oxazole can be synthesized by the Beckmann rearrangement of ethyl ethoxymethyleneoxime. This process involves heating ethyl ethoxymethyleneoxime in an acidic medium, typically hydrochloric acid, to produce the desired oxazole. The yield is usually around 70-80%, and the reaction is often conducted in a pressure vessel to ensure complete conversion.

What industries use 2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8)?

2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8) finds applications in the pharmaceutical industry as a precursor for the synthesis of various bioactive compounds. It is also used in the polymer industry for the preparation of functional polymers, in the sensor industry for gas sensing applications, and in the semiconductor industry as a dopant material.

What precautions should be taken when handling 2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8)?

When handling 2-Ethyl-4,5-dihydro-1,3-oxazole (CAS: 10431-98-8), ensure proper laboratory safety practices. Use appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work in a well-ventilated area or fume hood to avoid inhaling vapors. Store the compound in a cool, dry place away from direct sunlight and flammable materials. In case of a spill, neutralize the spill with an appropriate absorbent and dispose of it according to your facility’s hazardous waste management guidelines. Always refer to the safety data sheet (SDS) for detailed information.