295469
2-Methylpropene
99%
Synonym(s):
Isobutylene
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About This Item
Linear Formula:
(CH3)2C=CH2
CAS Number:
Molecular Weight:
56.11
Beilstein:
773645
EC Number:
MDL number:
UNSPSC Code:
12142100
PubChem Substance ID:
NACRES:
NA.22
vapor density
2 (vs air)
Quality Level
vapor pressure
3278 mmHg ( 37.7 °C)
Assay
99%
autoignition temp.
869 °F
bp
−6.9 °C (lit.)
mp
−140 °C
SMILES string
CC(C)=C
InChI
1S/C4H8/c1-4(2)3/h1H2,2-3H3
InChI key
VQTUBCCKSQIDNK-UHFFFAOYSA-N
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General description
2-methylpropene is used to synthesize S-(+)-2,2-Dimethylcyclopropane carboxylic acid via asymmetric cyclopropanation reaction.
Application
2-Methylpropene can be used in the following reactions:
- Asymmetric synthesis of S-(+)-2,2-dimethylcyclopropane carboxylic acid, a key building block for the synthesis of cilastatin.
- Alkylation of p-xylene to form t-butyl-p-xylene catalyzed by a heteropolyacid.
- Synthesis of poly(2-methylpropene) or polyisobutene.
Packaging
Supplied in a Sure/Pac™ cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve.
Compatible with the following:
Compatible with the following:
Legal Information
Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Flam. Gas 1 - Press. Gas Liquefied gas
Storage Class Code
2A - Gases
WGK
nwg
Flash Point(F)
-112.0 °F - closed cup
Flash Point(C)
-80 °C - closed cup
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Regulatory Information
监管及禁止进口产品
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Selective alkylation of p-xylene with 2-methylpropene by 12-tungstophosphoric acid.
Soeda H, et al.
Chemistry Letters (Jpn), 23(5), 909-912 (1994)
Solvent?Ligated Copper (II) Complexes for the Homopolymerization of 2?Methylpropene.
Li Y, et al.
Chemistry (Weinheim An Der Bergstrasse, Germany), 14(26), 7997-8003 (2008)
The synthesis of S-(+)-2, 2-dimethylcyclopropane carboxylic acid: a precursor for cilastatin.
Wang Q, et al.
Tetrahedron Asymmetry, 9(22), 3971-3977 (1998)
The synthesis of S-(+)-2, 2-dimethylcyclopropane carboxylic acid: a precursor for cilastatin
Wang Q, et al.
Tetrahedron Asymmetry, 9, 3971-3977 (1998)
Molybdenum (III) Compounds as Catalysts for 2?Methylpropene Polymerization.
Hijazi A K, et al.
Angewandte Chemie (International Edition in English), 46(38), 7290-7292 (2007)
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