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Ethyl 2-ethylacetoacetate
Cas No: 607-97-6
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Ethyl 2-ethylacetoacetate
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High quality Ethyl 2-Ethyl Acetoacetate supplier in China
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(2R)-2-ethyl-3-oxobutanoic acid ethyl ester
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Ethyl 2-Ethyl-3-Oxobutanoate
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Ethyl 2-ethylacetoacetate
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BLOOM TECH Advanced API/Technology support Ethyl 2-ethyl-3-oxobutanoate CAS 607-97-6
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607-97-6 Usage

Uses

Ethyl 2-ethylacetoacetate was used in the synthesis of 2-alkylidenetetrahydrofurans, diphenyllead(IV) thiosemicarbazonates and pyrazolonates. It was used as starting reagent in the synthesis of 2-ethylfumaric acid.

Synthesis Reference(s)

Synthetic Communications, 10, p. 279, 1980 DOI: 10.1080/00397918008062751
InChI:InChI=1/C8H14O3/c1-4-7(6(3)9)8(10)11-5-2/h7H,4-5H2,1-3H3/t7-/m1/s1

607-97-6 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Alfa Aesar (B22295)  Ethyl 2-ethylacetoacetate, 95%    607-97-6 25g 982.0CNY Detail
Alfa Aesar (B22295)  Ethyl 2-ethylacetoacetate, 95%    607-97-6 100g 3263.0CNY Detail

607-97-6SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Ethyl 2-ethyl-3-oxobutanoate

1.2 Other means of identification

Product number -
Other names ethyl 2-ethyl-3-oxobutanoate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives -> Flavoring Agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:607-97-6 SDS

607-97-6Synthetic route

ethyl bromide
74-96-4

ethyl bromide

ethyl acetoacetate
141-97-9

ethyl acetoacetate

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With sodium ethanolate In ethanol at -10 - 10℃; for 2h; Inert atmosphere;94.9%
With potassium carbonate In ethanol; water at 70℃; for 10h; regioselective reaction;85.3%
With sodium ethanolate78%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With sodium In tetrahydrofuran for 20h; Heating;87%
Stage #1: ethyl acetoacetate With potassium tert-butylate In tetrahydrofuran at 0℃; for 0.5h;
Stage #2: ethyl iodide In tetrahydrofuran at 70℃; for 12h; Further stages.;
74%
With 1,8-diazabicyclo[5.4.0]undec-7-ene In benzene for 3h; Ambient temperature;50%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

ethyl iodide
75-03-6

ethyl iodide

A

ethyl 2,2-diethyl-3-oxobutanoate
1619-57-4

ethyl 2,2-diethyl-3-oxobutanoate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With P(MeNCH2CH2)3N In hexane; acetonitrile at 0℃; for 0.5h;A n/a
B 78%
With sodium ethanolate 1.) EtOH, 80 deg C, 2.) EtOH, 80 deg C, 2 h; Yield given. Multistep reaction. Yields of byproduct given;
With aluminum oxide; sodium ethanolate 2.) room temperature, 5 d; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
With sodium ethanolate 1.) EtOH, 80 deg C, 2.) EtOH, 80 deg C, 2 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;
diethyl sulfate
64-67-5

diethyl sulfate

ethyl acetoacetate
141-97-9

ethyl acetoacetate

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With dimethyl amine at 10 - 15℃;70%
With sodium ethanolate
diethyl sulfate
64-67-5

diethyl sulfate

enolate potassique de l'acetylacetate d'ethyle

enolate potassique de l'acetylacetate d'ethyle

A

ethyl (Z)-3-ethoxybut-2-enoate
5331-73-7

ethyl (Z)-3-ethoxybut-2-enoate

B

ethyl (E)-3-ethoxy-2-butenoate
57592-45-7

ethyl (E)-3-ethoxy-2-butenoate

C

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With polymer-HMPT In tetrahydrofuran at 20℃; for 24h; Yields of byproduct given;A n/a
B 54%
C n/a
With copolymere de vinyloxazolidone et de divinylbenzene In tetrahydrofuran at 20℃; for 24h; Yield given. Yields of byproduct given;
With 3-methyl-2-oxo-1,3-oxazolidine In tetrahydrofuran at 20℃; for 24h; Yield given. Yields of byproduct given;
With N,N,N,N,N,N-hexamethylphosphoric triamide In tetrahydrofuran at 20℃; for 24h; Product distribution; further reagents, variation of equivalents of the reagents;
ethyl bromide
74-96-4

ethyl bromide

ethyl acetoacetate
141-97-9

ethyl acetoacetate

A

ethyl 3-ethoxy-2-butenoate
998-91-4

ethyl 3-ethoxy-2-butenoate

B

ethyl 2,2-diethyl-3-oxobutanoate
1619-57-4

ethyl 2,2-diethyl-3-oxobutanoate

C

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With aluminum oxide; sodium ethanolate 2.) room temperature, 5 d; Yields of byproduct given. Title compound not separated from byproducts;A n/a
B n/a
C 53%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

diphenylethylsulfonium perchlorate
10504-65-1

diphenylethylsulfonium perchlorate

A

ethyl 3-ethoxy-2-butenoate
998-91-4

ethyl 3-ethoxy-2-butenoate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With potassium carbonate In dichloromethane for 17h; Ambient temperature;A 10%
B 50%
ethyl-α-ethylacetoacetate cyanohydrin
247098-17-5

ethyl-α-ethylacetoacetate cyanohydrin

A

3-amino-3-cyano-2-ethyl-3-methyl-propionic acid ethyl ester

3-amino-3-cyano-2-ethyl-3-methyl-propionic acid ethyl ester

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With hydrogen; nickel In methanol; ammonium hydroxide at 20℃; under 2068.59 - 2327.17 Torr;A 50%
B n/a
ethyl bromide
74-96-4

ethyl bromide

18-crown-6 ether
17455-13-9

18-crown-6 ether

acetoacetic acid ethyl ester; potassium (Z)-enolate
66279-50-3

acetoacetic acid ethyl ester; potassium (Z)-enolate

[2.2.2]cryptande
23978-09-8

[2.2.2]cryptande

A

ethyl (Z)-3-ethoxybut-2-enoate
5331-73-7

ethyl (Z)-3-ethoxybut-2-enoate

B

ethyl (E)-3-ethoxy-2-butenoate
57592-45-7

ethyl (E)-3-ethoxy-2-butenoate

C

ethyl 2,2-diethyl-3-oxobutanoate
1619-57-4

ethyl 2,2-diethyl-3-oxobutanoate

D

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
In 1,2-dimethoxyethane at 40℃; Mechanism; Product distribution;A 2%
B 8%
C n/a
D n/a
2-ethyl-3-methyl-pentenedioic acid diethyl ester

2-ethyl-3-methyl-pentenedioic acid diethyl ester

A

oxalic acid
144-62-7

oxalic acid

B

ethyl acetoacetate
141-97-9

ethyl acetoacetate

C

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
bei der Ozonspaltung;
4-ethyl-3-methyl-pentenedioic acid diethyl ester
857819-83-1

4-ethyl-3-methyl-pentenedioic acid diethyl ester

A

oxalic acid
144-62-7

oxalic acid

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
bei der Ozonspaltung;
2-acetyl-3-methyl-succinic acid-1-ethyl ester
90833-10-6

2-acetyl-3-methyl-succinic acid-1-ethyl ester

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
Erhitzen;
ethanol
64-17-5

ethanol

ethyl acetoacetate
141-97-9

ethyl acetoacetate

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
Reaktion ueber mehrere Stufen;
ethyl bromide
74-96-4

ethyl bromide

sodium ethanolate
141-52-6

sodium ethanolate

ethyl acetoacetate
141-97-9

ethyl acetoacetate

diethyl malonate
105-53-3

diethyl malonate

A

ethyl diethyl malonate
133-13-1

ethyl diethyl malonate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 3-methylaminocrotonate
870-85-9

ethyl 3-methylaminocrotonate

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
at 100℃; beim folgenden Kochen mit Wasser;
anschliessende Hydrolyse des Reaktionsprodukts mit siedendem Wasser;
ethanol
64-17-5

ethanol

sodium ethyl acetylacetate enolate
1007476-32-5

sodium ethyl acetylacetate enolate

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

3-diethylamino-crotonic acid ethyl ester
59222-31-0

3-diethylamino-crotonic acid ethyl ester

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

3-dipropylamino-crotonic acid ethyl ester

3-dipropylamino-crotonic acid ethyl ester

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
anschliessende Hydrolyse des Reaktionsprodukts mit siedendem Wasser;
sodium ethyl acetylacetate enolate
1007476-32-5

sodium ethyl acetylacetate enolate

ethyl iodide
75-03-6

ethyl iodide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
at 160 - 170℃;
With diethyl ether
With benzene
at 100℃;
sodium ethanolate
141-52-6

sodium ethanolate

ethyl iodide
75-03-6

ethyl iodide

acetoacetic acid methyl ester
105-45-3

acetoacetic acid methyl ester

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl iodide
75-03-6

ethyl iodide

3-dimethylamino-crotonic acid ethyl ester
14205-42-6

3-dimethylamino-crotonic acid ethyl ester

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
anschliessenden Hydrolyse mit Wasser;
anschliessende Hydrolyse des Reaktionsprodukts mit siedendem Wasser;
ethyl acetate
141-78-6

ethyl acetate

2-bromobutyric acid ethyl ester
533-68-6

2-bromobutyric acid ethyl ester

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With magnesium
Ketene
463-51-4

Ketene

2-bromobutyric acid ethyl ester
533-68-6

2-bromobutyric acid ethyl ester

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With diethyl ether; iodine; zinc
ethyl bromide
74-96-4

ethyl bromide

ethyl acetoacetate
141-97-9

ethyl acetoacetate

A

ethyl 3-ethoxy-2-butenoate
998-91-4

ethyl 3-ethoxy-2-butenoate

B

ethyl 2,2-diethyl-3-oxobutanoate
1619-57-4

ethyl 2,2-diethyl-3-oxobutanoate

C

2-Ethyl-3-ethoxy-3-methyl-acrylsaeureethylester
103110-71-0

2-Ethyl-3-ethoxy-3-methyl-acrylsaeureethylester

D

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
(i) K, EtOH, (ii) /BRN= 1209224/, HMPA; Multistep reaction;
ethyl bromide
74-96-4

ethyl bromide

acetoacetic acid ethyl ester; potassium (Z)-enolate
66279-50-3

acetoacetic acid ethyl ester; potassium (Z)-enolate

A

ethyl (Z)-3-ethoxybut-2-enoate
5331-73-7

ethyl (Z)-3-ethoxybut-2-enoate

B

ethyl (E)-3-ethoxy-2-butenoate
57592-45-7

ethyl (E)-3-ethoxy-2-butenoate

C

ethyl 2,2-diethyl-3-oxobutanoate
1619-57-4

ethyl 2,2-diethyl-3-oxobutanoate

D

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With 18-crown-6 ether 1) DME, 40 deg C, 2) DME, 40 deg C; Yield given. Multistep reaction. Yields of byproduct given;
ethyl bromide
74-96-4

ethyl bromide

acetoacetic acid ethyl ester; potassium (Z)-enolate
66279-50-3

acetoacetic acid ethyl ester; potassium (Z)-enolate

A

ethyl (E)-3-ethoxy-2-butenoate
57592-45-7

ethyl (E)-3-ethoxy-2-butenoate

B

ethyl 2,2-diethyl-3-oxobutanoate
1619-57-4

ethyl 2,2-diethyl-3-oxobutanoate

C

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With [2.2.2]cryptande 1) t-BuOH, 40 deg C, 2) t-BuOH, 40 deg C; Yield given. Multistep reaction. Yields of byproduct given;
diethyl sulfate
64-67-5

diethyl sulfate

C12H34N6O2P2*2C6H9O3(1-)*2Li(1+)
84850-88-4

C12H34N6O2P2*2C6H9O3(1-)*2Li(1+)

A

ethyl 3-ethoxy-2-butenoate
998-91-4

ethyl 3-ethoxy-2-butenoate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
In dichloromethane for 72h; Product distribution; Ambient temperature; other metal ion, other time, var. addends;A 46 % Chromat.
B 54 % Chromat.
diethyl sulfate
64-67-5

diethyl sulfate

acetoacetic acid ethyl ester; potassium (Z)-enolate
66279-50-3

acetoacetic acid ethyl ester; potassium (Z)-enolate

A

ethyl (Z)-3-ethoxybut-2-enoate
5331-73-7

ethyl (Z)-3-ethoxybut-2-enoate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
In tetrahydrofuran for 66h; Yield given. Yields of byproduct given;
With N,N,N,N,N,N-hexamethylphosphoric triamide In tetrahydrofuran for 24h; Yield given. Yields of byproduct given;
diethyl sulfate
64-67-5

diethyl sulfate

enolate lithique de l'acetylacetate d'ethyle
33283-91-9

enolate lithique de l'acetylacetate d'ethyle

A

ethyl (Z)-3-ethoxybut-2-enoate
5331-73-7

ethyl (Z)-3-ethoxybut-2-enoate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With N,N,N,N,N,N-hexamethylphosphoric triamide In tetrahydrofuran for 74h; Yield given. Yields of byproduct given;
With N,N,N,N,N,N-hexamethylphosphoric triamide In tetrahydrofuran for 24h; Yield given. Yields of byproduct given;
diethyl sulfate
64-67-5

diethyl sulfate

enolate sodique de l'acetylacetate d'ethyle
20412-62-8, 66279-49-0

enolate sodique de l'acetylacetate d'ethyle

A

ethyl (Z)-3-ethoxybut-2-enoate
5331-73-7

ethyl (Z)-3-ethoxybut-2-enoate

B

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With N,N,N,N,N,N-hexamethylphosphoric triamide In tetrahydrofuran for 120h; Yield given. Yields of byproduct given;
With N,N,N,N,N,N-hexamethylphosphoric triamide In tetrahydrofuran for 24h; Yield given. Yields of byproduct given;
With Hexamethylphosphorous triamide In tetrahydrofuran for 120h; Product distribution; Ambient temperature; different Li, Na, K enolates, ratios of reagent, reaction times; with solid and liquid and without HMPT;
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

2-ethyl-2-chloro-acetoacetic acid ethyl ester
130000-37-2

2-ethyl-2-chloro-acetoacetic acid ethyl ester

Conditions
ConditionsYield
With tetraethylammonium trichloride In dichloromethane100%
With N-chloro-succinimide; magnesium(II) perchlorate In acetonitrile at 20℃; for 2h;86%
With chlorine
Conditions
ConditionsYield
With D-glucose; ketoreductase-102; NADPH; glucose dehydrogenase; sodium phosphate buffer at 37℃; for 3h; pH=6.9;100%
With D-glucose; calcium carbonate; sodium chloride In water at 35℃; for 72h; Enzymatic reaction; optical yield given as %ee; enantioselective reaction;78%
With Escherichia coli strain expressing Gcy1p; isopropyl β-D-thiogalactopyranoside at 20℃; Reduction;75%
With D-glucose; tris hydrochloride at 30℃; for 48h; β-keto ester reductase L-1, NADPH, GDH;31%
With glucose-6-phosphate dehydrogenase; α-D-glucose 6-phosphate; baker yeast YDL124w gene-pIK8 plasmid; NAD at 30℃; for 24h; pH=7.0;
[N-(p-tolylsulfonyl)imino]phenyliodinane
55962-05-5

[N-(p-tolylsulfonyl)imino]phenyliodinane

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-acetyl-3-methyl-1-tosylaziridine-2-carboxylate
1373511-29-5

ethyl 2-acetyl-3-methyl-1-tosylaziridine-2-carboxylate

Conditions
ConditionsYield
With 1,10-Phenanthroline; copper(II) bis(trifluoromethanesulfonate) In dichloromethane at 20℃; for 18h; Molecular sieve; Inert atmosphere; optical yield given as %de;99%
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

4-ethyl-3-methylisoxazol-5(4H)-one
29068-31-3

4-ethyl-3-methylisoxazol-5(4H)-one

Conditions
ConditionsYield
With hydroxylamine hydrochloride; sodium acetate In ethanol at 78℃;99%
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-bromo-2-ethyl-3-oxobutanoate
32116-06-6

ethyl 2-bromo-2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
With N-Bromosuccinimide; ammonium acetate In tetrachloromethane at 80℃; for 0.5h;97%
With sodium hydrogen sulfate; N-Bromosuccinimide; silica gel at 20℃; for 2h;95%
With ammonium bromide; dihydrogen peroxide; vanadia In dichloromethane; water at 0 - 5℃; for 3h;94%
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

2-ethyl-1,3-butanediol
66553-17-1

2-ethyl-1,3-butanediol

Conditions
ConditionsYield
With lithium aluminium tetrahydride In diethyl ether for 3h; Heating;96%
With methanol; copper chromite at 150 - 168℃; Hydrogenation.unter Druck;
With copper chromite; ethanol at 150 - 168℃; Hydrogenation.unter Druck;
N-hydroxyphthalimide
524-38-9

N-hydroxyphthalimide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-(N-phthalimidyloxy)-2-ethyl-3-oxobutanoate

ethyl 2-(N-phthalimidyloxy)-2-ethyl-3-oxobutanoate

Conditions
ConditionsYield
Stage #1: N-hydroxyphthalimide; ethyl 2-ethyl-3-oxobutanoate With cobalt(II) diacetate tetrahydrate In acetic acid at 60℃; for 0.0166667h;
Stage #2: With potassium permanganate In acetic acid at 60℃; for 0.175h;
94%
2-methylbenzene-1,3-diol
608-25-3

2-methylbenzene-1,3-diol

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

3-ethyl-7-hydroxy-4,8-dimethyl-2H-1-benzopyran-2-one
31575-15-2

3-ethyl-7-hydroxy-4,8-dimethyl-2H-1-benzopyran-2-one

Conditions
ConditionsYield
With perchloric acid at 20℃; Pechmann condensation;92%
With sulfuric acid at 0℃; for 12h; Pechmann Condensation;
With sulfuric acid at 0℃; Pechmann Condensation;
ethylene glycol
107-21-1

ethylene glycol

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

2-ethoxycarbonylmethyl-2-methyl-1,3-dioxolane
27773-10-0

2-ethoxycarbonylmethyl-2-methyl-1,3-dioxolane

Conditions
ConditionsYield
With toluene-4-sulfonic acid In toluene at 120℃; for 4h; Product distribution / selectivity;91%
With toluene-4-sulfonic acid In toluene at 120℃; for 4h; Heating / reflux;91%
With toluene-4-sulfonic acid In toluene for 3.5h; Cyclization; Heating;70%
phenylhydrazine
100-63-0

phenylhydrazine

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

4-ethyl-3-methyl-1-phenylpyrazol-5-one
22717-41-5

4-ethyl-3-methyl-1-phenylpyrazol-5-one

Conditions
ConditionsYield
for 0.05h; microwave irradiation;91%
In ethanol Reflux;
tert-Butyl N-hydroxycarbamate
36016-38-3

tert-Butyl N-hydroxycarbamate

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

C13H23NO6

C13H23NO6

Conditions
ConditionsYield
With copper(II) acetate hydrate; 2-ethyl-1,3-oxazoline; copper(l) chloride In isopropyl alcohol at 20℃; regioselective reaction;90%
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

3-methyl-4-ethyl-5-pyrazolone
29211-62-9

3-methyl-4-ethyl-5-pyrazolone

Conditions
ConditionsYield
With hydrazine for 0.00833333h;89%
With hydrazine hydrate; acetic acid In methanol at 100℃; for 1h;67%
4-methoxy-aniline
104-94-9

4-methoxy-aniline

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

C15H21NO3

C15H21NO3

Conditions
ConditionsYield
ammonium cerium(IV) nitrate In ethanol at 20℃; for 1.5h;89%
orcinol
504-15-4

orcinol

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

3-ethyl-7-hydroxy-4,5-dimethyl-2H-1-benzopyran-2-one

3-ethyl-7-hydroxy-4,5-dimethyl-2H-1-benzopyran-2-one

Conditions
ConditionsYield
With perchloric acid at 20℃; Pechmann condensation;89%
2,2-dibromo-5,5-dimethylcyclohexane-1,3-dione
21428-65-9

2,2-dibromo-5,5-dimethylcyclohexane-1,3-dione

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

α-bromo-2-ethyl-3-oxobutyryc acid ethyl ester

α-bromo-2-ethyl-3-oxobutyryc acid ethyl ester

B

2-bromodimedone
1195-91-1

2-bromodimedone

Conditions
ConditionsYield
Stage #1: ethyl 2-ethyl-3-oxobutanoate With L-Norvaline In dichloromethane for 0.0833333h;
Stage #2: 2,2-dibromo-5,5-dimethylcyclohexane-1,3-dione With dipyridinium dichromate In dichloromethane for 2h; Cooling with ice; optical yield given as %ee; enantioselective reaction;
A 88%
B n/a
ethyl (2S,3R)-3-(methoxymethyloxy)-2-methylbutanoate

ethyl (2S,3R)-3-(methoxymethyloxy)-2-methylbutanoate

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl (6S,7R)-2-ethyl-3,5-dihydroxy-7-(methoxymethyloxy)-6-methylocta-2,4-dienoate

ethyl (6S,7R)-2-ethyl-3,5-dihydroxy-7-(methoxymethyloxy)-6-methylocta-2,4-dienoate

Conditions
ConditionsYield
Stage #1: ethyl 2-ethyl-3-oxobutanoate With sodium hydride In tetrahydrofuran at 0℃; for 0.25h; Claisen Condensation;
Stage #2: With n-butyllithium In tetrahydrofuran; hexane at 0℃; for 0.266667h; Claisen Condensation;
Stage #3: ethyl (2S,3R)-3-(methoxymethyloxy)-2-methylbutanoate In tetrahydrofuran; hexane at 0℃; for 0.25h; Claisen Condensation;
88%
ethyl (2R, 3S)-3-(methoxymethyloxy)-2-methylbutanoate

ethyl (2R, 3S)-3-(methoxymethyloxy)-2-methylbutanoate

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

C15H26O6

C15H26O6

Conditions
ConditionsYield
Stage #1: ethyl 2-ethyl-3-oxobutanoate With sodium hydride In tetrahydrofuran at 0℃; for 0.25h;
Stage #2: With n-butyllithium In tetrahydrofuran; hexane at 0℃; for 0.266667h;
Stage #3: ethyl (2R, 3S)-3-(methoxymethyloxy)-2-methylbutanoate In tetrahydrofuran; hexane at 0℃; for 0.25h;
88%
2-(4'-aminophenyl)-4-quinolinecarboxylic acid
94205-62-6

2-(4'-aminophenyl)-4-quinolinecarboxylic acid

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

2-{4-[N'-(1-ethyl-2-oxo-propylidene)-hydrazino]-phenyl}-quinoline-4-carboxylic acid

2-{4-[N'-(1-ethyl-2-oxo-propylidene)-hydrazino]-phenyl}-quinoline-4-carboxylic acid

Conditions
ConditionsYield
Stage #1: 2-(4'-aminophenyl)-4-quinolinecarboxylic acid
Stage #2: ethyl 2-ethyl-3-oxobutanoate With sodium hydroxide; sodium acetate In ethanol; water pH=4 - 4.5; Japp-Klingemann reaction;
87%
aniline
62-53-3

aniline

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

C14H19NO2

C14H19NO2

Conditions
ConditionsYield
ammonium cerium(IV) nitrate In ethanol at 20℃; for 3h;87%
3-bromo-4-chloroaniline
823-54-1

3-bromo-4-chloroaniline

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl (E)-2-(2-(3-bromo-4-chlorophenyl)hydrazineylidene)butanoate

ethyl (E)-2-(2-(3-bromo-4-chlorophenyl)hydrazineylidene)butanoate

Conditions
ConditionsYield
Stage #1: 3-bromo-4-chloroaniline With hydrogenchloride; acetic acid; sodium nitrite In water at 0℃; for 1.16667h;
Stage #2: ethyl 2-ethyl-3-oxobutanoate With potassium hydroxide In ethanol; water at 0 - 80℃; for 5h; pH=7;
87%
Stage #1: 3-bromo-4-chloroaniline With hydrogenchloride; acetic acid; sodium nitrite In water at 0℃; for 0.666667h;
Stage #2: ethyl 2-ethyl-3-oxobutanoate With potassium hydroxide In ethanol; water at 0 - 80℃; for 5h; pH=7;
87%
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

trimethyl orthoformate
149-73-5

trimethyl orthoformate

ethyl 2-ethyl-3,3-dimethoxybutyrate

ethyl 2-ethyl-3,3-dimethoxybutyrate

Conditions
ConditionsYield
With toluene-4-sulfonic acid In methanol for 24h; Ambient temperature;86%
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-ethyl-2-iodo-3-oxobutanoate

ethyl 2-ethyl-2-iodo-3-oxobutanoate

Conditions
ConditionsYield
With N-iodo-succinimide; magnesium(II) perchlorate In acetonitrile at 20℃; for 0.25h;86%
With bis(acetylacetonate)oxovanadium; dihydrogen peroxide; sodium iodide In water; ethyl acetate at 0 - 5℃; for 13h; regioselective reaction;79%
6-amino-4,7-dimethylcoumarin
29001-25-0

6-amino-4,7-dimethylcoumarin

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-[2-(4,7-dimethyl-2-oxo-2H-chromen-6-yl)azo]-3-oxo-2-ethyl-butanoate

ethyl 2-[2-(4,7-dimethyl-2-oxo-2H-chromen-6-yl)azo]-3-oxo-2-ethyl-butanoate

Conditions
ConditionsYield
Stage #1: 6-amino-4,7-dimethylcoumarin With hydrogenchloride; acetic acid; sodium nitrite at 5℃; for 2h;
Stage #2: ethyl 2-ethyl-3-oxobutanoate With sodium acetate; acetic acid at 20℃; for 10h; pH=5.5;
86%
N-(2-fluoro-3-nitrophenyl)-4-[(2S)-tetrahydrofuran-2-ylmethoxy]benzamide
1314129-13-9

N-(2-fluoro-3-nitrophenyl)-4-[(2S)-tetrahydrofuran-2-ylmethoxy]benzamide

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl (2E)-2-{[2-fluoro-3-({4-[(2S)-tetrahydrofuran-2-ylmethoxy]benzoyl}amino)phenyl]hydrazono}butanoate
1314129-15-1

ethyl (2E)-2-{[2-fluoro-3-({4-[(2S)-tetrahydrofuran-2-ylmethoxy]benzoyl}amino)phenyl]hydrazono}butanoate

Conditions
ConditionsYield
Stage #1: N-(2-fluoro-3-nitrophenyl)-4-[(2S)-tetrahydrofuran-2-ylmethoxy]benzamide With hydrogen; palladium-on-charcoal In tetrahydrofuran; water at 20℃; for 15h;
Stage #2: With hydrogenchloride; sodium nitrite In water; acetonitrile at -25 - 5℃; for 0.5h;
Stage #3: ethyl 2-ethyl-3-oxobutanoate With potassium hydroxide In water at -20℃;
86%
methyl vinyl ketone
78-94-4

methyl vinyl ketone

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-ethyl-3-oxo-2-(3-oxo-1-butyl)-butanoate
100315-75-1

ethyl 2-ethyl-3-oxo-2-(3-oxo-1-butyl)-butanoate

Conditions
ConditionsYield
lithium hydroxide In 1,2-dimethoxyethane for 0.5h; Ambient temperature;85%
lithium iodide In 1,4-dioxane for 12h; Heating;82%
K bis(1,2-benzenediolato)phenylsilicate In chloroform at 40℃; for 6h; organosilicate-catalyzed Michael addition;74%
With molecular sieve; Eu(tfc)3 In tetrachloromethane at -33℃; for 72h;71%
With sodium perchlorate In methanol at 24.84℃; Michael Addition; Electrochemical reaction;
ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-ethyl-2-chloro-3,3-difluorobutyrate
114745-67-4

ethyl 2-ethyl-2-chloro-3,3-difluorobutyrate

Conditions
ConditionsYield
With sulfur tetrafluoride; hydrogen fluoride; chlorine at 25℃; for 10h; autoclave;85%
formaldehyd
50-00-0

formaldehyd

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 2-methylenebutyrate
3070-65-3

ethyl 2-methylenebutyrate

Conditions
ConditionsYield
Stage #1: ethyl 2-ethyl-3-oxobutanoate With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.5h;
Stage #2: formaldehyd In tetrahydrofuran at -78 - 20℃; Further stages.;
85%
N,N-bis(ethoxymethyl)benzylamine
55686-29-8

N,N-bis(ethoxymethyl)benzylamine

ethyl 2-ethyl-3-oxobutanoate
607-97-6

ethyl 2-ethyl-3-oxobutanoate

ethyl 1-benzyl-3-ethyl-4-oxo-3-piperidinecarboxylate
113385-99-2

ethyl 1-benzyl-3-ethyl-4-oxo-3-piperidinecarboxylate

Conditions
ConditionsYield
With Methyltrichlorosilane In acetonitrile at 20℃; for 20h; Mannich reaction;85%

607-97-6Upstream product

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