Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities
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inquiryAppearance:off-white to white solid Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for Synthesis API and Research Transportation:As customer request Port:Qingda
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Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
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Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
2,4-dimethylthiophene CAS NO.638-00-6 Application:2,4-dimethylthiophene CAS NO.638-00-6
We are committed to providing our customers with the best products and services at the most competitive prices.Appearance:white powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as primary a
Thiophene,2,4-dimethyl-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
4-bromo-2-methylthiophene
methylmagnesium chloride
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether for 22h; | 79% |
1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In tetrahydrofuran; diethyl ether Kumada coupling; Heating; |
Conditions | Yield |
---|---|
With potassium hydroxide; hydrazine hydrate In diethylene glycol | 76% |
Conditions | Yield |
---|---|
Stage #1: 3-Methylthiophene With 2,2,6,6-tetramethylpiperidinyl-lithium In tetrahydrofuran; pentane at -78℃; for 1h; Stage #2: methyl iodide In tetrahydrofuran at -78 - 20℃; for 4h; Further stages.; | 73% |
Stage #1: 3-Methylthiophene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In diethyl ether; hexane at 0 - 20℃; for 3h; Stage #2: methyl iodide at 0 - 20℃; for 5h; | 68% |
Stage #1: 3-Methylthiophene With 2,2,6,6-tetramethyl-piperidine; tert.-butyl lithium In tetrahydrofuran; pentane at -78℃; for 1h; Stage #2: methyl iodide In tetrahydrofuran; pentane at -78 - 20℃; for 2h; |
methyl magnesium iodide
4-bromo-2-methylthiophene
2,4-dimethylthiophene
Conditions | Yield |
---|---|
nickel 1,3-bis(diphenylphosphino)propane In diethyl ether for 22h; Heating; | 66% |
Conditions | Yield |
---|---|
Bildung ueber das Hydrazon; |
2,5-Dimethyl-[1,4]dithiin
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With sulfur at 200℃; |
Conditions | Yield |
---|---|
With diphosphorus trisulfide | |
With phosphorous (V) sulfide |
Conditions | Yield |
---|---|
With sulfur at 260℃; |
methyloxirane
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With aluminum oxide; hydrogen sulfide at 400℃; |
2-Methylthiophene
Methyl fluoride
A
2,3-dimethylthiophene
B
2,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
Conditions | Yield |
---|---|
With oxygen; trimethylamine In gas at 37.5℃; Product distribution; Kinetics; Mechanism; radiolysis: 1.5*104 Gy at 5*105 Gy h-1; variable pressures; |
2-Methylthiophene
A
2-ethylthiophene
B
2,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 11.7 % Chromat. B 0.6 % Chromat. C 4.9 % Chromat. D 9.2 % Chromat. |
2,3-dimethylthiophene
A
3,4-dimethylthiophene
B
2-ethylthiophene
C
2,4-dimethylthiophene
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 2.3 % Chromat. B 1.5 % Chromat. C 1.5 % Chromat. D 12.8 % Chromat. |
3,4-dimethylthiophene
A
thiophene
B
2-Methylthiophene
C
2,4-dimethylthiophene
D
toluene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 1.9 % Chromat. B 1.4 % Chromat. C 6.2 % Chromat. D 2.4 % Chromat. |
3,4-dimethylthiophene
A
2,3-dimethylthiophene
B
2,4-dimethylthiophene
C
2,5-DIMETHYLTHIOPHENE
D
3-Methylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 5.1 % Chromat. B 6.2 % Chromat. C 1.1 % Chromat. D 12.2 % Chromat. |
3,4-dimethylthiophene
A
2,4-dimethylthiophene
B
2,5-DIMETHYLTHIOPHENE
C
3-Methylthiophene
D
benzene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 6.2 % Chromat. B 1.1 % Chromat. C 12.2 % Chromat. D 17.6 % Chromat. |
2,5-DIMETHYLTHIOPHENE
A
2-Methylthiophene
B
2,4-dimethylthiophene
C
toluene
D
benzene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 15.4 % Chromat. B 3.3 % Chromat. C 2.6 % Chromat. D 36.9 % Chromat. |
3-Methylthiophene
A
thiophene
B
2,3-dimethylthiophene
C
2,4-dimethylthiophene
D
benzene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 13.6 % Chromat. B 13.6 % Chromat. C 1.7 % Chromat. D 7.7 % Chromat. |
3-Methylthiophene
A
2-Methylthiophene
B
2,3-dimethylthiophene
C
3,4-dimethylthiophene
D
2,4-dimethylthiophene
Conditions | Yield |
---|---|
1.) glow discharge, 2.) -196 deg C -> -80 deg C; Further byproducts given. Title compound not separated from byproducts; | A 14.4 % Chromat. B 13.6 % Chromat. C 1.7 % Chromat. D 1.7 % Chromat. |
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With diphosphorus trisulfide |
Conditions | Yield |
---|---|
at 400℃; |
Conditions | Yield |
---|---|
at 260℃; |
3-Methylthiophene
methyl iodide
A
2,3-dimethylthiophene
B
2,4-dimethylthiophene
Conditions | Yield |
---|---|
Stage #1: 3-Methylthiophene With methyllithium In tetrahydrofuran at 20℃; for 1h; Stage #2: methyl iodide In tetrahydrofuran at 20℃; Further stages.; | |
Stage #1: 3-Methylthiophene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In diethyl ether; hexane Stage #2: methyl iodide In diethyl ether; hexane Further stages. Title compound not separated from byproducts.; |
2-bromo-4-methylthiophene
methylmagnesium chloride
2,4-dimethylthiophene
Conditions | Yield |
---|---|
1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In tetrahydrofuran; diethyl ether Kumada coupling; Heating; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: LDA / tetrahydrofuran; hexane / 2 h / -78 °C 1.2: 80 percent / methanol / tetrahydrofuran; hexane 2.1: 79 percent / Ni(dppp)Cl2 / diethyl ether / 22 h View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: butyl lithium; diethyl ether / Behandeln mit Dimethylformamid und Hydrolysieren 2: Bildung ueber das Hydrazon View Scheme |
2,4-dimethyl-2,5-dihydrothiophene
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With bunazosin In benzene |
Conditions | Yield |
---|---|
With [1,1'-bis(diphenylphosphino)ferrocene]nickel(II) chloride In diethyl ether for 24h; Inert atmosphere; Reflux; |
thiophene
Dimethyldisulphide
A
2-Methylthiophene
B
3,4-dimethylthiophene
C
2,4-dimethylthiophene
D
2,3,4-trimethylthiophene
E
2,5-DIMETHYLTHIOPHENE
F
tetramethylthiophene
G
3-Methylthiophene
H
methylthiol
I
dimethylsulfide
J
hydrogen sulfide
Conditions | Yield |
---|---|
With Co/HZSM-5 at 300℃; under 760.051 Torr; Inert atmosphere; Flow reactor; |
2,4-dimethylthiophene
2,4-dibromo-3,5-dimethylthiophene
Conditions | Yield |
---|---|
With bromine for 0.05h; Ambient temperature; | 96% |
With bromine In acetic acid | 65% |
With carbon disulfide; bromine Erwaermen des Reaktionsprodukts mit methanol. Kalilauge; |
Conditions | Yield |
---|---|
With n-butyllithium In tetrahydrofuran; hexane at -78 - 20℃; for 2.5h; Inert atmosphere; | 95% |
2,4-dimethylthiophene
N,N-bis(4-methylphenyl)-N-(4-iodophenyl) amine
Conditions | Yield |
---|---|
Stage #1: 2,4-dimethylthiophene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In diethyl ether; hexane at 20℃; for 2h; Stage #2: With zinc(II) chloride In diethyl ether at 20℃; for 5h; Stage #3: N,N-bis(4-methylphenyl)-N-(4-iodophenyl) amine; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 20 - 50℃; for 7h; | 92% |
Conditions | Yield |
---|---|
Stage #1: 2,4-dimethylthiophene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine; zinc(II) chloride In diethyl ether; hexane at -30 - 20℃; for 6h; Metallation; Stage #2: iodobenzene; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran; diethyl ether; hexane at 50℃; for 12h; Phenylation; | 90% |
Yield given. Multistep reaction; |
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With sulfuryl dichloride In dichloromethane for 2h; Reflux; | 85% |
28% | |
With sulfuryl dichloride In dichloromethane |
2,4-dimethylthiophene
(E)-4-bromostilbene
Conditions | Yield |
---|---|
Stage #1: 2,4-dimethylthiophene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine; zinc(II) chloride In diethyl ether; hexane at -30 - 20℃; for 6h; Metallation; Stage #2: (E)-4-bromostilbene; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran; diethyl ether; hexane at 50℃; for 12h; Arylation; | 80% |
2,4-dimethylthiophene
N,N-dimethyl-formamide
3,5-dimethyl-2-thiophenecarboxaldehyde
Conditions | Yield |
---|---|
With trichlorophosphate 1.) r.t., 1 h, 2.) heating, 30 min; | 77% |
With trichlorophosphate at 70 - 75℃; for 3h; | 66% |
With diethyl ether anschliessendes Hydrolysieren; |
2,4-dimethylthiophene
trifluoroacetic anhydride
1-(3,5-dimethylthiophen-2-yl)-2,2,2-trifluoroethanone
Conditions | Yield |
---|---|
With magnesium perchlorate dihydrate In 1,2-dichloro-ethane at 60℃; for 12h; Friedel-Crafts Acylation; regioselective reaction; | 76% |
3,5-dimethylthiophene-2-carbonyl chloride
2,4-dimethylthiophene
bis(3,5-dimethyl-2-thienyl) ketone
Conditions | Yield |
---|---|
With aluminium trichloride In dichloromethane for 4h; | 72% |
Conditions | Yield |
---|---|
With 4-(ethylthio)-N,N-dimethylaniline; palladium diacetate; acetic acid; hydroquinone at 60℃; for 3h; | 65% |
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate; bis-[(trifluoroacetoxy)iodo]benzene In dichloromethane at -78℃; for 3h; Inert atmosphere; | 44% |
With boron trifluoride diethyl etherate; bis-[(trifluoroacetoxy)iodo]benzene In dichloromethane at -78℃; | 44 % Chromat. |
2,4-dimethylthiophene
oxalyl dichloride
1,2-bis(3,5-dimethyl-2-thienyl)ethane-1,2-dione
Conditions | Yield |
---|---|
With aluminium trichloride In n-heptane; 1,2-dichloro-ethane at -20℃; for 2.3h; Friedel-Crafts reaction; | 44% |
2,4-dimethylthiophene
2-bromoaniline
2-(2'-bromophenyl)-3,5-dimethylthiophene
Conditions | Yield |
---|---|
With isopentyl nitrite at 70℃; for 4h; | 43% |
2,4-dimethylthiophene
1-(2,3,3,4,4,5,5-Heptafluoro-1-cyclopenten-1-yl)-2-methylnaphthalene
3,5-dimethyl-2-[3,3,4,4,5,5-hexafluoro-2-(2-methyl-1-naphthalenyl)-1-cyclopenten-1-yl]thiophene
Conditions | Yield |
---|---|
Stage #1: 2,4-dimethylthiophene With N,N,N,N,-tetramethylethylenediamine In diethyl ether at 0℃; Inert atmosphere; Stage #2: With n-butyllithium In diethyl ether; hexane Inert atmosphere; Reflux; Stage #3: 1-(2,3,3,4,4,5,5-Heptafluoro-1-cyclopenten-1-yl)-2-methylnaphthalene In diethyl ether; hexane at -70 - 20℃; Inert atmosphere; | 43% |
2,4-dimethylthiophene
1-[2,4-dimethyl-5-(2'',4'',5''-triphenylimidazolyl-4'-yl)-3-thienyl]perfluorocyclopentene
1-(3,5-dimethyl-2-thienyl)-2-[2,4-dimethyl-5-(2'',4'',5''-triphenylimidazol-4'-yl)-3-thienyl]perfluorocyclopentene
Conditions | Yield |
---|---|
Stage #1: 2,4-dimethylthiophene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.5h; Stage #2: 1-[2,4-dimethyl-5-(2'',4'',5''-triphenylimidazolyl-4'-yl)-3-thienyl]perfluorocyclopentene In tetrahydrofuran at -78℃; for 1h; Further stages.; | 42% |
2,4-dimethylthiophene
3,3-dimethoxy-4-oxo-cyclohexa-1,5-dienecarbonitrile
Conditions | Yield |
---|---|
for 5h; Diels-Alder reaction; Heating; | A 3% B 40% |
2,4-dimethylthiophene
4-acetyl-6,6-dimethoxy-cyclohexa-2,4-dienone
Conditions | Yield |
---|---|
for 5h; Diels-Alder reaction; Heating; | A 33% B 21% |
2,4-dimethylthiophene
3,3-dimethoxy-4-oxo-cyclohexa-1,5-dienecarboxylic acid methyl ester
Conditions | Yield |
---|---|
for 5h; Diels-Alder reaction; Heating; | A 6% B 12% C 32% |
2,4-dimethylthiophene
chloromethyl methyl ether
2,4-bis(chloromethyl)-3,5-dimethylthiophene
Conditions | Yield |
---|---|
With titanium tetrachloride In carbon disulfide Ambient temperature; | 22% |
2,4-dimethylthiophene
carbamic chloride
3,5-dimethyl-thiophene-2-carboxylic acid amide
Conditions | Yield |
---|---|
With carbon disulfide; aluminium trichloride |
2,4-dimethylthiophene
acetic anhydride
1-(3,5-dimethyl-[2]thienyl)-ethanone
Conditions | Yield |
---|---|
With phosphoric acid; benzene |
Conditions | Yield |
---|---|
With tin(IV) chloride; benzene |
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With iodine; mercury(II) oxide; benzene |
2,4-dimethylthiophene
3,5-dimethyl-2-thiophenecarboxaldehyde
Conditions | Yield |
---|---|
With n-butyllithium; diethyl ether |
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With sulfuric acid; sulfur trioxide Erwaermen des Dinatrium-Salzes der erhaltenen Disulfonsaeure mit Phosphor(V)-chlorid; |
2,4-dimethylthiophene
Conditions | Yield |
---|---|
With ethanol; sodium acetate; mercury dichloride |
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