294985
Allene
≥95%
Synonym(s):
Propadiene
Sign In to View Organizational & Contract Pricing.
Select a Size
About This Item
Linear Formula:
H2C=C=CH2
CAS Number:
Molecular Weight:
40.06
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
207-335-3
Beilstein/REAXYS Number:
1730774
MDL number:
Assay:
≥95%
InChI key
IYABWNGZIDDRAK-UHFFFAOYSA-N
InChI
1S/C3H4/c1-3-2/h1-2H2
SMILES string
C=C=C
vapor density
1.42 (20 °C, vs air)
vapor pressure
6795 mmHg ( 21 °C)
assay
≥95%
expl. lim.
13 %
bp
−34 °C (lit.)
mp
−136 °C (lit.)
Quality Level
Application
- Allene is extensively used in a variety of photochemical, thermal, and transition metal-mediated cycloadditions.
- It can be lithiated to obtain allenyllithium which reacts with alkyl halides to afford terminal allenes.
- Additional application includes the preparation of reagents such as isopropenylsilanes and isopropenylstannanes by reacting with stannyl and silyl cuprates respectively.
Packaging
Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.
Compatible with the following:
Compatible with the following:
- Aldrich® lecture-bottle station systems
- Aldrich® lecture-bottle gas regulators
Other Notes
See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation
Legal Information
Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
signalword
Danger
hcodes
Hazard Classifications
Flam. Gas 1 - Press. Gas Liquefied gas
Storage Class
2A - Gases
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)
Regulatory Information
监管及禁止进口产品
This item has
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
?-Cyanocyclobutenone as a highly reactive dienophile in comparison to ?-cyanocyclopentenone.
Bienfait B, et al.
Tetrahedron, 47(38), 8167-8176 (1991)
Versatile allene and carbon dioxide equivalents for the Diels-Alder reaction.
Bonjouklian R and Ruden R A
The Journal of Organic Chemistry, 42(25), 4095-4103 (1977)
The silyl-cupration and stannyl-cupration of allenes.
Fleming I, et al.
Tetrahedron, 45(2), 413-424 (1989)
Gold(I)-catalyzed stereoconvergent, intermolecular enantioselective hydroamination of allenes.
Kristina L Butler et al.
Angewandte Chemie (International ed. in English), 51(21), 5175-5178 (2012-04-12)
Anthony Pitaval et al.
Organic letters, 15(17), 4580-4583 (2013-08-22)
Gold(I)-catalyzed allene-vinylcyclopropane cycloisomerization leads to the tricyclic framework of the protoilludanes in a single step by a reaction that involves a cyclopropane ring expansion and a Prins cyclization.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service