Product Name

  • Name

    5-ETHOXY-5H-FURAN-2-ONE

  • EINECS 428-330-4
  • CAS No. 2833-30-9
  • Article Data19
  • CAS DataBase
  • Density 1.13 g/cm3
  • Solubility
  • Melting Point
  • Formula C6H8O3
  • Boiling Point 262.8 °C at 760 mmHg
  • Molecular Weight 128.128
  • Flash Point 104.3 °C
  • Transport Information
  • Appearance
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 2833-30-9 (5-ETHOXY-5H-FURAN-2-ONE)
  • Hazard Symbols
  • Synonyms Crotonicacid, 4-ethoxy-4-hydroxy-, g-lactone (6CI,7CI);5-Ethoxy-2(5H)-furanone;5-Ethoxy-2,5-dihydro-2-furanone;b-Formylacrylic acid pseudoethyl ester;
  • PSA 35.53000
  • LogP 0.46200

Synthetic route

furfural
98-01-1

furfural

ethanol
64-17-5

ethanol

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Conditions
ConditionsYield
With Eosin Y Irradiation;60%
With Eosin Y; oxygen Irradiation;53%
With oxygen in Gegenwart von Eosin und Vanadium(V)-oxid unter Bestrahlung mit Gluehlampenlicht;
With dihydrogen peroxide; vanadia 1) H2O, 50-55 deg C, 3 h, 2) benzene, reflux; Yield given. Multistep reaction;
2,3,7-trioxa-bicyclo-<2.2.1>-hept-5-ene
6824-18-6

2,3,7-trioxa-bicyclo-<2.2.1>-hept-5-ene

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

3,4-epoxy-butyrolactone
82140-94-1, 94739-84-1

3,4-epoxy-butyrolactone

Conditions
ConditionsYield
In chloroform -20 deg C, then 20 deg C, 1 h;A n/a
B 15%
C n/a
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

2-ethoxyfuran
5809-07-4

2-ethoxyfuran

B

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

C

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A n/a
B 40 % Chromat.
C 12 % Chromat.
D 12%
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

4-oxo-but-2-enoic acid ethyl ester
2960-66-9

4-oxo-but-2-enoic acid ethyl ester

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C n/a
D 12%
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

trans-2-hydroxy-5-ethoxy-2,5-dihydrofuran

trans-2-hydroxy-5-ethoxy-2,5-dihydrofuran

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C n/a
D 12%
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

cis-2-hydroxy-5-ethoxy-2,5-dihydrofuran

cis-2-hydroxy-5-ethoxy-2,5-dihydrofuran

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C n/a
D 12%
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

trans-2,5-diethoxy-2,5-dihydrofuran

trans-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C 12%
D 5%
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

D

succinic acid diethyl ester
123-25-1

succinic acid diethyl ester

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C 12%
D 1%
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

trans-β-formylacrylic acid
4437-06-3

trans-β-formylacrylic acid

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; ethanol; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C n/a
D 12%
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

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

2-buten-4-olide

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; ethanol; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C 2%
D 12%
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

cis-2,5-dihydroxy-2,5-dihydrofuran
87891-64-3

cis-2,5-dihydroxy-2,5-dihydrofuran

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; ethanol; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 12 % Chromat.
C n/a
D 12%
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

maleic acid
110-16-7

maleic acid

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; ethanol; dihydrogen peroxide at 20℃; for 6h; Further byproducts given. Title compound not separated from byproducts;A 40 % Chromat.
B 12 % Chromat.
C 2%
D 12%
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

(2E)-but-2-enedioic acid
110-17-8

(2E)-but-2-enedioic acid

D

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; ethanol; dihydrogen peroxide at 20℃; for 6h; Further byproducts given. Title compound not separated from byproducts;A 40 % Chromat.
B 12 % Chromat.
C n/a
D 12%
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

cis-2,5-diethoxy-2,5-dihydrofuran

cis-2,5-diethoxy-2,5-dihydrofuran

trans-2,5-diethoxy-2,5-dihydrofuran

trans-2,5-diethoxy-2,5-dihydrofuran

Conditions
ConditionsYield
With oxovanadium(IV) sulfate; ethanol; dihydrogen peroxide at 20℃; for 6h; Further byproducts given;A 40 % Chromat.
B 10%
C 12%
D 5%
furan
110-00-9

furan

ethanol
64-17-5

ethanol

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Conditions
ConditionsYield
With oxygen in Gegenwart von Eosin;
furan
110-00-9

furan

ethanol
64-17-5

ethanol

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Conditions
ConditionsYield
With oxygen at 20℃;
furan
110-00-9

furan

A

5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Conditions
ConditionsYield
With oxygen In ethanol at 20℃; Irradiation;
5-hydroxy-2-(5H)-furanone
14032-66-7

5-hydroxy-2-(5H)-furanone

ethanol
64-17-5

ethanol

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Conditions
ConditionsYield
In chloroform at 70℃; Yield given;
(furan-2-yloxy)-trimethylsilane
61550-02-5

(furan-2-yloxy)-trimethylsilane

ethanol
64-17-5

ethanol

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Conditions
ConditionsYield
With iodosylbenzene; boron trifluoride diethyl etherate 1.) ethanol, 0 deg C, CH2Cl2; 2.) r.t.,overnight; Yield given. Multistep reaction;
N-(furan-2-ylmethyl)acetamide
5663-62-7

N-(furan-2-ylmethyl)acetamide

ethanol
64-17-5

ethanol

oxygen

oxygen

A

acetamide
60-35-5

acetamide

B

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

C

N,N-methylenediacetamide
3852-14-0

N,N-methylenediacetamide

Conditions
ConditionsYield
photosensibilisierte Reaktion;
furfural
98-01-1

furfural

oxygen

oxygen

A

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

B

formic acid ethyl ester
109-94-4

formic acid ethyl ester

Conditions
ConditionsYield
photosensibilisierte Reaktion;
furfural
98-01-1

furfural

ethanol
64-17-5

ethanol

A

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

B

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

2-buten-4-olide

C

diethyl Fumarate
623-91-6

diethyl Fumarate

D

Diethyl maleate
141-05-9

Diethyl maleate

Conditions
ConditionsYield
Stage #1: furfural With vanadyl sulfate trihydrate; ethanol; dihydrogen peroxide at 60℃;
Stage #2: ethanol With benzenesulfonic acid In chloroform Heating;
3-bromo-5-ethoxyfuran-2(5H)-one

3-bromo-5-ethoxyfuran-2(5H)-one

A

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

B

C6H7BrO3

C6H7BrO3

C

C6H7BrO3

C6H7BrO3

Conditions
ConditionsYield
With OPR3; NADH In aq. buffer at 30℃; pH=7.5; Enzymatic reaction;A n/a
B n/a
C n/a
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

2-nitrobenzamide
610-15-1

2-nitrobenzamide

2-Nitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

2-Nitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;85%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

benzamide
55-21-0

benzamide

5-Benzoylamino-Δ3-oxolin-2-on
62668-57-9

5-Benzoylamino-Δ3-oxolin-2-on

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;85%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

4-bromo-5-ethoxyfuran-2(5H)-one
32978-38-4

4-bromo-5-ethoxyfuran-2(5H)-one

Conditions
ConditionsYield
With bromine In tetrachloromethane at 0 - 20℃; for 3.5h;82%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

ruthenium
7440-18-8

ruthenium

4-bromo-5-ethoxyfuran-2(5H)-one
32978-38-4

4-bromo-5-ethoxyfuran-2(5H)-one

Conditions
ConditionsYield
With bromine In tetrachloromethane82%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

4-methoxyphenylacetamide
3424-93-9

4-methoxyphenylacetamide

4-Methoxy-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

4-Methoxy-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;80%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

urea
57-13-6

urea

(5-Oxo-2,5-dihydro-furan-2-yl)-urea

(5-Oxo-2,5-dihydro-furan-2-yl)-urea

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;80%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

4-nitrobenzamide
619-80-7

4-nitrobenzamide

4-Nitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

4-Nitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;80%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

4-chlorobenzamide
619-56-7

4-chlorobenzamide

4-Chloro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

4-Chloro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;80%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

3,5-dinitrobenzamide
121-81-3

3,5-dinitrobenzamide

3,5-Dinitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

3,5-Dinitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;75%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

3,4-dinitro-benzoic acid amide
98604-39-8

3,4-dinitro-benzoic acid amide

3,4-Dinitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

3,4-Dinitro-N-(5-oxo-2,5-dihydro-furan-2-yl)-benzamide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;75%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

trimethylsilylazide
4648-54-8

trimethylsilylazide

1,8-diazabicyclo[5.4.0]undec-7-ene
6674-22-2

1,8-diazabicyclo[5.4.0]undec-7-ene

4-azido-5-ethoxy-dihydrofuran-2-one

4-azido-5-ethoxy-dihydrofuran-2-one

Conditions
ConditionsYield
With acetic acid In dichloromethane73%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Cyclopentanol
96-41-3

Cyclopentanol

(4S,5R)-5-ethoxy-4-(1-hydroxycyclopentyl)dihydrofuran-2(3H)-one

(4S,5R)-5-ethoxy-4-(1-hydroxycyclopentyl)dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With bis(p-methoxyphenyl)methanone UV-irradiation;73%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

methacrylic acid methyl ester
80-62-6

methacrylic acid methyl ester

Copolymer, molecular weight 4000 amu, monomeric units - butenolide and vinyl compound - ratio in product 5:95, intrinsic viscosity 0.023 dl/g

Copolymer, molecular weight 4000 amu, monomeric units - butenolide and vinyl compound - ratio in product 5:95, intrinsic viscosity 0.023 dl/g

Conditions
ConditionsYield
With dibenzoyl peroxide at 80℃; for 4.5h; Polymerization;68%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

undecanamide
2244-06-6

undecanamide

Undecanoic acid (5-oxo-2,5-dihydro-furan-2-yl)-amide

Undecanoic acid (5-oxo-2,5-dihydro-furan-2-yl)-amide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;65%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Palmitamide
629-54-9

Palmitamide

Hexadecanoic acid (5-oxo-2,5-dihydro-furan-2-yl)-amide

Hexadecanoic acid (5-oxo-2,5-dihydro-furan-2-yl)-amide

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h;65%
styrene
292638-84-7

styrene

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

Copolymer, molecular weight 3990 amu, monomeric units - butenolide and vinyl compound - ratio in product 4:96, intrinsic viscosity 0.025 dl/g

Copolymer, molecular weight 3990 amu, monomeric units - butenolide and vinyl compound - ratio in product 4:96, intrinsic viscosity 0.025 dl/g

Conditions
ConditionsYield
With dibenzoyl peroxide at 80℃; for 9h; Polymerization;64%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

benzohydroximoyl chloride
698-16-8

benzohydroximoyl chloride

3-phenyl-4-oxo-6-ethoxy-3a,4,6,6a-tetrahydrofuro<3,4-d>-isoxazole
113003-50-2

3-phenyl-4-oxo-6-ethoxy-3a,4,6,6a-tetrahydrofuro<3,4-d>-isoxazole

Conditions
ConditionsYield
With triethylamine In diethyl ether Ambient temperature; overnight;61%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

vinyl acetate
108-05-4

vinyl acetate

Copolymer, molecular weight 4570 amu, monomeric units - butenolide and vinyl compound - ratio in product 60:40, intrinsic viscosity 0.022 dl/g

Copolymer, molecular weight 4570 amu, monomeric units - butenolide and vinyl compound - ratio in product 60:40, intrinsic viscosity 0.022 dl/g

Conditions
ConditionsYield
With dibenzoyl peroxide at 80℃; for 4.5h; Polymerization;61%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

isopropyl alcohol
67-63-0

isopropyl alcohol

(4S,5R)-5-ethoxy-4-(2-hydroxypropan-2-yl)-dihydrofuran-2(3H)-one

(4S,5R)-5-ethoxy-4-(2-hydroxypropan-2-yl)-dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With bis(p-methoxyphenyl)methanone UV-irradiation;60%
With bis(p-methoxyphenyl)methanone for 0.166667h; UV-irradiation; Continuous-flow microreactor; Inert atmosphere; diastereoselective reaction;100 %Spectr.
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

2-benzyl-buta-2,3-dienoic acid ethyl ester
433733-19-8

2-benzyl-buta-2,3-dienoic acid ethyl ester

5-ethoxy-4-[1-benzyl-1-(ethoxycarbonyl)ethynyl]dihydrofuran-2(3H)-one

5-ethoxy-4-[1-benzyl-1-(ethoxycarbonyl)ethynyl]dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With sodium benzenesulfonate In N,N-dimethyl-formamide at 20℃; for 24h;60%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

4-chlorobenzohydroximoyl chloride
28123-63-9

4-chlorobenzohydroximoyl chloride

(3aS,6R,6aR)-3-(4-Chloro-phenyl)-6-ethoxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one
113003-51-3

(3aS,6R,6aR)-3-(4-Chloro-phenyl)-6-ethoxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one

Conditions
ConditionsYield
With triethylamine In diethyl ether Ambient temperature; overnight;57%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

phenyllithium
591-51-5

phenyllithium

A

2,5-diphenylfuran
955-83-9

2,5-diphenylfuran

B

hydroxy-2 diphenyl-5,5 dihydro-2,5 furanne
85704-21-8

hydroxy-2 diphenyl-5,5 dihydro-2,5 furanne

Conditions
ConditionsYield
With water 1) THF, -70 deg C, 2) -20 deg C; Yield given. Multistep reaction;A n/a
B 57%
With water 1) THF, -70 deg C, 2) -20 deg C; Yield given. Multistep reaction;A 12%
B n/a
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

2-pentanol
584-02-1

2-pentanol

(4S,5R)-5-ethoxy-4-(3-hydroxypentan-3-yl)dihydrofuran-2(3H)-one

(4S,5R)-5-ethoxy-4-(3-hydroxypentan-3-yl)dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With bis(p-methoxyphenyl)methanone UV-irradiation;57%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

n-butyllithium
109-72-8, 29786-93-4

n-butyllithium

A

2,5-di(n-butyl)furan
72636-53-4

2,5-di(n-butyl)furan

B

hydroxy-2 di-n-butyl-5,5 dihydro-2,5 furanne
85704-19-4

hydroxy-2 di-n-butyl-5,5 dihydro-2,5 furanne

Conditions
ConditionsYield
With water 1) THF, -70 deg C, 2) -20 deg C; Yield given. Multistep reaction;A n/a
B 55%
With water 1) THF, -70 deg C, 2) -20 deg C; Yield given. Multistep reaction;A 5%
B n/a
acetamide
60-35-5

acetamide

5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

4-acetamido-4-hydroxy-2-butenoic acid γ-lactone
16275-44-8

4-acetamido-4-hydroxy-2-butenoic acid γ-lactone

Conditions
ConditionsYield
With hydrogenchloride at 80℃; for 0.0833333h; Product distribution; var. acylamides;45%
With hydrogenchloride at 80℃; for 0.0833333h;45%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

N-hydroxy-4-methylbenzenecarboximidoyl chloride
36288-37-6

N-hydroxy-4-methylbenzenecarboximidoyl chloride

(3aS,6R,6aR)-6-Ethoxy-3-p-tolyl-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one
113003-55-7

(3aS,6R,6aR)-6-Ethoxy-3-p-tolyl-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one

Conditions
ConditionsYield
With triethylamine In diethyl ether Ambient temperature; overnight;40%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

3-chloro-N-hydroxybenzimidoyl chloride
29203-59-6

3-chloro-N-hydroxybenzimidoyl chloride

(3aR,6S,6aS)-3-(3-Chloro-phenyl)-6-ethoxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one
113003-53-5

(3aR,6S,6aS)-3-(3-Chloro-phenyl)-6-ethoxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one

Conditions
ConditionsYield
With triethylamine In diethyl ether Ambient temperature; overnight;40%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

anthracene-9-carbonitrile N-oxide
2904-61-2

anthracene-9-carbonitrile N-oxide

(3aS,6R,6aR)-3-Anthracen-9-yl-6-ethoxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one
113003-56-8

(3aS,6R,6aR)-3-Anthracen-9-yl-6-ethoxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one

Conditions
ConditionsYield
In benzene at 80℃; for 4h;40%
5-ethoxy-2,5-dihydrofuran-2-one
2833-30-9

5-ethoxy-2,5-dihydrofuran-2-one

N-hydroxyfuran-2-carbimidoyl chloride
53945-98-5

N-hydroxyfuran-2-carbimidoyl chloride

(3aR,6S,6aS)-6-Ethoxy-3-furan-2-yl-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one
113003-57-9

(3aR,6S,6aS)-6-Ethoxy-3-furan-2-yl-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one

Conditions
ConditionsYield
With triethylamine In diethyl ether Ambient temperature; overnight;40%

5-ETHOXY-5H-FURAN-2-ONE Specification

The 2(5H)-Furanone,5-ethoxy- is an organic compound with the formula C6H8O3. The systematic name of this chemical is 5-Ethoxyfuran-2(5H)-one. With the CAS registry number 2833-30-9, it is also named as 5-Ethoxy-5H-furan-2-one. Besides, its molecular weight is 128.13.

Physical properties about 2(5H)-Furanone,5-ethoxy- are: (1)ACD/LogP: -0.99; (2)ACD/LogD (pH 5.5): -0.98; (3)ACD/LogD (pH 7.4): -0.98; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 6.94; (7)ACD/KOC (pH 7.4): 6.94; (8)#H bond acceptors: 3; (9)#Freely Rotating Bonds: 2; (10)Polar Surface Area: 35.53 Å2; (11)Index of Refraction: 1.465; (12)Molar Refractivity: 31.26 cm3; (13)Molar Volume: 112.9 cm3; (14)Polarizability: 12.39×10-24 cm3; (15)Surface Tension: 33.7 dyne/cm; (16)Density: 1.13 g/cm3; (17)Flash Point: 104.3 °C; (18)Enthalpy of Vaporization: 50.06 kJ/mol; (19)Boiling Point: 262.8 °C at 760 mmHg; (20)Vapour Pressure: 0.0107 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1)InChI: InChI=1/C6H8O3/c1-2-8-6-4-3-5(7)9-6/h3-4,6H,2H2,1H3
(2)InChIKey: NOZLVOMKFMVAKH-UHFFFAOYAG
(3)Std. InChI: InChI=1S/C6H8O3/c1-2-8-6-4-3-5(7)9-6/h3-4,6H,2H2,1H3
(4)Std. InChIKey: NOZLVOMKFMVAKH-UHFFFAOYSA-N

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