CAS No.497-23-4,2(5H)-Furanone Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	497-23-4
Name:	2(5H)-Furanone
Article Data:	150

Formula:	C₄H₄O₂
Molecular Weight:	84.0746
Synonyms:	Crotonicacid, 4-hydroxy-, g-lactone (6CI,7CI);2-Buten-4-olide;2-Butenoic acid,4-hydroxy-, g-lactone;2-Oxo-2,5-dihydrofuran;4-Hydroxy-2-butenoic acid lactone;5-Oxo-2,5-dihydrofuran-3-yl ester;Isocrotonolactone;g-Hydroxycrotonic acid lactone;
EINECS:	207-839-3
Density:	1.209 g/cm³
Melting Point:	4-5 °C(lit.)
Boiling Point:	203.7 °C at 760 mmHg
Flash Point:	87.3 °C
Solubility:	Immiscible with water.
Appearance:	COA
Hazard Symbols:	Xi
Risk Codes:	36/37/38
Safety:	26
PSA:	26.30000
LogP:	0.09940

Synthetic route

: 6117-80-2
1,4-butenediol

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With 5 wt% Pd nanoparticles loaded on phosphate anion exchanged [Mg6Al2(OH)16]CO3*xH2O; air at 50℃; under 760.051 Torr; for 6h; Reagent/catalyst; Irradiation;	100%
With Celite; silver carbonate In benzene for 2h; Heating;	78%
With allyl methyl carbonate; dihydridotetrakis(triphenylphosphine)ruthenium In toluene for 6h; Heating;	77%
at 30℃; for 24h; Nocardia corallina B-276;	50%
With sodium hydrogencarbonate; sodium carbonate at 20℃; for 3h; anodic oxidation on PbO2;

: (E/Z)-trimethylsilyl 4-bromo-2-butenoate

A: 2857-97-8
trimethylsilyl bromide

B: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
at 140 - 170℃; for 1h;	A 98% B 80%

η-allylcarboxylatoruthenium(II) complex RuC3H4CO2(P(C6H4-p-Cl)3)2(CO): η-allylcarboxylatoruthenium(II) complex RuC3H4CO2(P(C6H4-p-Cl)3)2(CO)

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With bromine In dichloromethane Ambient temperature;	93%

: 625-38-7
but-3-enoic acid

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
Stage #1: but-3-enoic acid With Oxalyl bromide; dimethyl sulfoxide In dichloromethane at -10 - 20℃; Inert atmosphere; Stage #2: With potassium carbonate In dichloromethane; water for 6h;	92%
With ammonium iodide; toluene-4-sulfonic acid; 3-chloro-benzenecarboperoxoic acid In 2,2,2-trifluoroethanol; acetonitrile at 20℃; for 24h;	63%
With [bis(acetoxy)iodo]benzene; lithium bromide In methanol at 20℃; for 1h;	60%

: 821-11-4, 6117-80-2, 110-64-5
1,4-butenediol

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With oxygen In toluene at 80℃; for 2.5h;	91%
With 1-methyl-1H-imidazole; [2,2]bipyridinyl; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; tetrakis(acetonitrile)copper(I) trifluoromethanesulfonate In acetonitrile at 22℃; for 6h; Reagent/catalyst;	80%
With [{Cu2(5-phenyl-2,8-bis(6′-bipyridinyl)-1,9,10-anthyridine)-(μ-ClO4)2}(PF6)2]; dihydrogen peroxide; sodium acetate In water at 70℃; for 12h;	63%

: 19444-84-9
3-hydroxyoxolan-2-one

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With sulfuric acid; acetic anhydride at 0℃; for 0.25h;	90%
Stage #1: 3-hydroxyoxolan-2-one With sulfuric acid; acetic anhydride at 0℃; for 0.25h; Stage #2: With dmap at 100℃; for 3h;	90%

η-allylcarboxylatoruthenium(II) complex RuC3H4CO2(PPh3)2(CO): η-allylcarboxylatoruthenium(II) complex RuC3H4CO2(PPh3)2(CO)

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With bromine In dichloromethane Ambient temperature;	86%

: 7093-88-1
2,5-diacetoxy-2,5-dihydrofuran

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With hydrogenchloride In water; acetone at 20℃; for 12h;	86%

: 332-77-4
2,5-dihydro-2,5-dimethoxyfuran

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With hydrogenchloride In water; acetone at 20℃; for 16h;	84%
With trimethylsilyl bromide In dichloromethane at 20℃;

: 20295-21-0
2-ethoxy-2,5-dimethyl-2,5-dihydrofuran

: 497-23-4
2-buten-4-olide

Conditions

Conditions	Yield
With sulfuric acid In water; acetone at 20℃; for 12h;	82%

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Chemistry

Molecule structure of Butenolide (CAS NO.497-23-4):

IUPAC Name: 2H-Furan-5-one
Molecular Weight: 84.07336 g/mol
Molecular Formula: C₄H₄O₂
Density: 1.208 g/cm³
Melting Point: 4-5 °C(lit.)
Boiling Point: 203.7 °C at 760 mmHg
Flash Point: 214 °F
Index of Refraction: 1.48
Molar Refractivity: 19.78 cm³
Molar Volume: 69.5 cm³
Surface Tension: 38.8 dyne/cm
Enthalpy of Vaporization: 44 kJ/mol
Vapour Pressure: 0.273 mmHg at 25 °C
Storage Temp.: 2-8 °C
XLogP3: -0.6
H-Bond Acceptor: 2
Exact Mass: 84.021129
MonoIsotopic Mass: 84.021129
Topological Polar Surface Area: 26.3
Heavy Atom Count: 6
Canonical SMILES: C1C=CC(=O)O1
InChI: InChI=1S/C4H4O2/c5-4-2-1-3-6-4/h1-2H,3H2
InChIKey: VIHAEDVKXSOUAT-UHFFFAOYSA-N
EINECS: 207-839-3
Product Categories of Butenolide (CAS NO.497-23-4): Heterocycles

Safety Profile

Hazard Codes: Irritant Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
RTECS: LU3453000
F: 8-10
Hazard Note: Irritant
HS Code: 29322980

Specification

Butenolide (CAS NO.497-23-4) is also named as 2-Buten-4-olide ; 2-Butenoic acid gamma-lactone ; 2-Butenoic acid, 4-hydroxy-, gamma-lactone ; 2-Butenoic acid-gamma-lactone ; 2-Butenolide ; 2-Oxo-2,5-dihydrofuran ; 4-Hydroxy-2-butenoic acid lactone ; 4-Hydroxycrotonic acid gamma-lactone ; 5-17-09-00112 (Beilstein Handbook Reference) ; BRN 0383585 ; CCRIS 5722 ; Isocrotonolactone ; NSC 197009 ; alpha,beta-Crotonolactone ; delta,alpha,beta-Butenolide ; gamma-Crotolactone ; gamma-Hydroxycrotonic acid lactone .