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inquiryProduct name 3-Bromo-2-methylpropene CAS 1458-98-6 Synonyms 1-Bromo-2-methyl-2-propene;1-propene,3-bromo-2-methyl-;2-(bromomethyl)propene;2-Methyl-2-propenylbromide;2-Methyl-3-br
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inquiryProduct Name: 3-Bromo-2-methylpropene CAS: 1458-98-6 MF: C4H7Br MW: 135 EINECS: 604-496-5 Mol File: 1458-98-6.mol 3-Bromo-2-methylpropene Structure 3-Bromo-2-methylpropene Chemical Properties Melting point -115.07°C (estim
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inquirySuperior quality moderate price & quick delivery Appearance:clear colorless to yellow liquid Storage:Keep away of light,cool place Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:3-Bromo-2-methyl-1-propene is used as
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Conditions | Yield |
---|---|
With sodium bromide | 85% |
With lithium bromide In acetone for 12h; Finkelstein reaction; Inert atmosphere; | 21% |
With acetone; sodium bromide | |
With methanol; sodium bromide | |
With sodium bromide |
Conditions | Yield |
---|---|
With phosphorus tribromide In pyridine 1.) -20 deg C, 4 h; 2.) room temperature, 2 h; | 55% |
With phosphorus tribromide at 30℃; for 2h; | 55% |
With phosphorus tribromide at 30℃; Inert atmosphere; | 50% |
A
2-methyl-3-bromo-1-propene
Conditions | Yield |
---|---|
In diethyl ether 2 h at 25°C under Ar or N2; chromy on Al2O3 with pentane, distn.; | A n/a B 55% |
In diethyl ether 2 h at 25°C under Ar or N2; chromy on Al2O3 with pentane, distn.; | A n/a B 55% |
1,2-dibromo-2-methyl-propane
A
2-methyl-3-bromo-1-propene
B
t-butyl bromide
Conditions | Yield |
---|---|
With copper at 390 - 400℃; |
Conditions | Yield |
---|---|
With methanol; amalgamated zinc |
(E)-but-2-enol
A
2-methyl-3-bromo-1-propene
B
(Z)-crotyl bromide
C
(E)-1-Bromo-2-butene
Conditions | Yield |
---|---|
With phosphorus tribromide In dichloromethane at 0 - 5℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
isobutene
A
2-methyl-3-bromo-1-propene
B
N-(2-bromo-2-methyl-1-propyl)succinimide
Conditions | Yield |
---|---|
With N-Bromosuccinimide In dichloromethane at 15℃; Irradiation; competition reaction with 3,3-dimethyl-1-butene and methylene chloride; |
methanol
3-Chloro-2-methylpropene
A
2-methyl-3-bromo-1-propene
B
1,2-dimethoxy-2-methylpropane
C
methallyl methyl ether
D
isobutyraldehyde dimethyl acetal
2-methyl-3-bromo-1-propene
Conditions | Yield |
---|---|
With pyridine; phosphorus tribromide |
Conditions | Yield |
---|---|
With acetone |
1,2-dibromo-2-methyl-propane
A
2-methyl-3-bromo-1-propene
B
t-butyl bromide
Conditions | Yield |
---|---|
at 390 - 400℃; |
methanol
1,2,3-tribromo-2-methylpropane
A
2-methyl-3-bromo-1-propene
B
methallyl methyl ether
Conditions | Yield |
---|---|
anfangs unter Kuehlung; |
Conditions | Yield |
---|---|
With N-Bromosuccinimide; toluene-4-sulfonic acid at 100℃; for 4h; Inert atmosphere; | |
With N-Bromosuccinimide; toluene-4-sulfonic acid In tetrahydrofuran at 100℃; for 4h; Inert atmosphere; Schlenk technique; |
isobutene
A
2-methyl-3-bromo-1-propene
B
1,2-dibromo-2-methyl-propane
C
1-bromo-2-methylpropane-2-ol
Conditions | Yield |
---|---|
With hydrogen bromide; oxygen; sodium nitrite In water at 40℃; under 760.051 Torr; Ionic liquid; |
phenylacetic acid
2-methyl-3-bromo-1-propene
(±)-4-methyl-2-phenyl-4-pentenoic acid
Conditions | Yield |
---|---|
Stage #1: phenylacetic acid With lithium diisopropyl amide In tetrahydrofuran at 20℃; for 0.5h; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran at 20℃; | 100% |
Stage #1: phenylacetic acid With lithium diisopropyl amide In tetrahydrofuran; n-heptane; ethylbenzene at -78 - 0℃; for 0.5h; Inert atmosphere; Stage #2: 2-methyl-3-bromo-1-propene In N,N-dimethyl-formamide; mineral oil at -78℃; for 2h; Inert atmosphere; | 93% |
With lithium diisopropyl amide 1.) THF, 0 deg C, then 25 deg C, 1 h and 60 deg C, 0.5 h, 2.) 0 deg C, then 25 deg C, 16 h; Multistep reaction; | |
Stage #1: phenylacetic acid With n-butyllithium In tetrahydrofuran; hexanes at 0℃; Inert atmosphere; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran; hexanes at -78℃; for 0.333333h; Inert atmosphere; |
Conditions | Yield |
---|---|
With manganese; copper dichloride In water for 16h; Ambient temperature; | 100% |
With tetraethylammonium perchlorate; sodium iodide In N,N-dimethyl-formamide electrochemical reaction; | 100 % Chromat. |
2-methyl-3-bromo-1-propene
N-(diphenylmethylene)glycine tert-butyl ester
tert-butyl 2-[(diphenylmethylidene)amino]-4-methylpent-4-enoate
Conditions | Yield |
---|---|
With potassium hydroxide; 2(2CF3Ph)2tBu-2MeO-Me(R)Napht-yl-Et-diH-5Hdibenzo-azepinium; water In toluene at 0℃; for 1h; | 100% |
Stage #1: 2-methyl-3-bromo-1-propene; N-(diphenylmethylene)glycine tert-butyl ester With tetrabutylammomium bromide In dichloromethane at 0℃; for 0.166667h; Stage #2: With potassium hydroxide In dichloromethane; water at 20℃; for 18h; | 92% |
With 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone; lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; | |
Stage #1: N-(diphenylmethylene)glycine tert-butyl ester With sodium hydride In tetrahydrofuran Stage #2: 2-methyl-3-bromo-1-propene | |
With sodium hydride In tetrahydrofuran |
2-methyl-3-bromo-1-propene
Conditions | Yield |
---|---|
Stage #1: Merrifield resin, 2 percent DVB cross-linking, DF 57 percent With 4,4'-di-tert-butylbiphenyl; lithium In tetrahydrofuran at 20℃; for 4h; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran at -78 - 25℃; for 4h; Stage #3: With water In tetrahydrofuran | 100% |
Conditions | Yield |
---|---|
Stage #1: 2-Hydroxyphenylacetic acid With potassium hydroxide at 40℃; for 0.166667h; Stage #2: 2-methyl-3-bromo-1-propene In N,N-dimethyl-formamide at 20℃; | 100% |
2-methyl-3-bromo-1-propene
4-acetamido-3-bromoacetophenone
N-(4-acetyl-2-bromophenyl)-N-(2-methylallyl)acetamide
Conditions | Yield |
---|---|
With sodium hydride In DMF (N,N-dimethyl-formamide) at 25℃; for 17h; | 100% |
2-methyl-3-bromo-1-propene
(2R,4R)-3-<(Benzyloxy)carbonyl>-4-methyl-2-phenyl-1,3-oxazolidin-5-one
C22H23NO4
Conditions | Yield |
---|---|
Stage #1: (2R,4R)-3-<(Benzyloxy)carbonyl>-4-methyl-2-phenyl-1,3-oxazolidin-5-one With lithium hexamethyldisilazane In tetrahydrofuran at -60℃; for 0.5h; Large scale; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran at -60℃; for 8h; Temperature; Large scale; | 100% |
With potassium hexamethylsilazane In tetrahydrofuran; toluene at -35 - -30℃; for 4.5h; | 90% |
2-methyl-3-bromo-1-propene
5,6,7,8-tetrahydro-5-oxoimidazo[1,5-c]pyrimidine
2-(2-methylprop-2-enyl)-5-oxo-5,6,7,8-tetrahydroimidazo[1,5-c]pyrimidin-2-ium bromide
Conditions | Yield |
---|---|
In acetonitrile at 85℃; for 72h; | 100% |
In acetonitrile at 95℃; for 15h; Inert atmosphere; | 100% |
4-hydroxy-1-(pyrrolidin-1-yl)butan-1-one
2-methyl-3-bromo-1-propene
4-((2-methylallyl)oxy)-1-(pyrrolidin-1-yl)butan-1-one
Conditions | Yield |
---|---|
Stage #1: 4-hydroxy-1-(pyrrolidin-1-yl)butan-1-one With sodium hydride In tetrahydrofuran; mineral oil at 0℃; Inert atmosphere; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran; mineral oil at 0 - 20℃; Inert atmosphere; | 100% |
2-methyl-3-bromo-1-propene
N-[(3,3-dimethylcycloprop-1-enyl)phenylmethyl]-4-methylbenzenesulfonamide
N-[(3,3-dimethylcycloprop-1-enyl)phenylmethyl]-4-methyl-N-(2-methylallyl)benzenesulfonamide
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 2h; | 100% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 2h; | 99% |
3-benzyloxy-phenylacetic acid methyl ester
2-methyl-3-bromo-1-propene
methyl 2-(3-(benzyloxy)phenyl)-4-methylpent-4-enoate
Conditions | Yield |
---|---|
Stage #1: 3-benzyloxy-phenylacetic acid methyl ester With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 1h; Inert atmosphere; Cooling with ethanol-dry ice; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran at -78℃; | 100% |
Stage #1: 3-benzyloxy-phenylacetic acid methyl ester With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 1h; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran at -78 - 20℃; | 100% |
2-methyl-3-bromo-1-propene
ethyl N-(t-butyloxycarbonyl)nipecotate
1-tert-butyl 3-ethyl 3-(2-methylprop-2-en-1-yl)piperidine-1,3-dicarboxylate
Conditions | Yield |
---|---|
Stage #1: ethyl N-(t-butyloxycarbonyl)nipecotate With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.5h; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran at -78 - 20℃; | 100% |
2-methyl-3-bromo-1-propene
4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane
4,4,5,5-tetramethyl-2-(2-methylallyl)-1,3,2-dioxaborolane
Conditions | Yield |
---|---|
With magnesium In tetrahydrofuran at 25℃; for 2.08333h; Inert atmosphere; | 100% |
With magnesium In tetrahydrofuran at 25℃; for 2.5h; | 69% |
With magnesium In tetrahydrofuran at 20℃; for 2h; Inert atmosphere; Schlenk technique; | 65% |
Conditions | Yield |
---|---|
Stage #1: C10H10F3IN2 With TurboGrignard In tetrahydrofuran at -20℃; for 0.5h; Inert atmosphere; Stage #2: 2-methyl-3-bromo-1-propene With copper(I) cyanide di(lithium chloride) In tetrahydrofuran at -20℃; for 1.5h; | 100% |
2-methyl-3-bromo-1-propene
dimethyl 4-pentenylmalonate
Conditions | Yield |
---|---|
Stage #1: dimethyl 4-pentenylmalonate With sodium hydride In tetrahydrofuran; mineral oil at 0℃; for 0.5h; Stage #2: 2-methyl-3-bromo-1-propene In tetrahydrofuran; mineral oil at 0 - 20℃; | 100% |
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 5h; | 100% |
Conditions | Yield |
---|---|
Stage #1: thymin In acetonitrile for 0.0833333h; Inert atmosphere; Reflux; Stage #2: 2-methyl-3-bromo-1-propene With chloro-trimethyl-silane; sodium iodide In acetonitrile for 16h; Inert atmosphere; Reflux; | 100% |
Conditions | Yield |
---|---|
With ammonium acetate; zinc In tetrahydrofuran at 0℃; for 0.166667h; Inert atmosphere; | 100% |
Conditions | Yield |
---|---|
Stage #1: 2-decyn-1-ol With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; for 0.5h; Williamson Ether Synthesis; Stage #2: 2-methyl-3-bromo-1-propene In N,N-dimethyl-formamide; mineral oil at 20℃; Williamson Ether Synthesis; | 100% |
2-methyl-3-bromo-1-propene
(+)-dimethyl-2,3-O-isopropylidene-D-tartrate
Conditions | Yield |
---|---|
With lithium hexamethyldisilazane In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide at -78℃; for 4h; diastereoselective reaction; | 100% |
2-methyl-3-bromo-1-propene
methyl N-(diphenylmethylene)glycinate
Methyl 2-amino-4-methylpent-4-enoate
Conditions | Yield |
---|---|
Stage #1: 2-methyl-3-bromo-1-propene; methyl N-(diphenylmethylene)glycinate With tetra-(n-butyl)ammonium iodide; caesium carbonate In acetonitrile for 4h; Inert atmosphere; Reflux; Stage #2: With hydrogenchloride In water; acetonitrile at 20℃; for 0.5h; Inert atmosphere; | 100% |
Conditions | Yield |
---|---|
With zinc In N,N-dimethyl-formamide for 0.5h; Ambient temperature; | 99% |
With indium; water In tetrahydrofuran at 20℃; |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 1h; | 99% |
With potassium carbonate In acetone Heating; Yield given; | |
With potassium carbonate In acetonitrile at 60℃; |
2-methyl-3-bromo-1-propene
1,2:5,6-di-O-isopropylidene-α-D-glucofuranose
5-[2,2-dimethyl-(4R)-1,3-dioxolan-4-yl]-2,2-dimethyl-(3aR,5R,6S,6aR)-perhydrofuro[2,3-d][1,3]dioxol-6-yl 2-methylallyl ether
Conditions | Yield |
---|---|
Stage #1: 1,2:5,6-di-O-isopropylidene-α-D-glucofuranose With sodium hydride In tetrahydrofuran at 0 - 20℃; Stage #2: 2-methyl-3-bromo-1-propene With tetra-(n-butyl)ammonium iodide In tetrahydrofuran at 20℃; for 16h; | 99% |
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 1h; | 66% |
With sodium hydride In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide Alkylation; |
2-methyl-3-bromo-1-propene
2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With potassium hydroxide; tetrabutylammomium bromide In toluene at 25℃; for 0.4h; | 99% |
2-methyl-3-bromo-1-propene
(4S)-6-methyl-4-[N-(2,4,6-trimethylphenylsulfonyl)amino]hepta-1,2-diene
N-[(1S)-1-isobutylbuta-2,3-dienyl]-N-(2-methylprop-2-enyl)-2,4,6-trimethylphenylsulfonamide
Conditions | Yield |
---|---|
With sodium hydride In N,N-dimethyl-formamide at 0℃; | 99% |
2-methyl-3-bromo-1-propene
(4S,5S)-5-methyl-4-[N-(2,4,6-trimethylphenylsulfonyl)amino]hepta-1,2-diene
N-(2-methylprop-2-enyl)-N-{(1S)-1-[(1S)-1-methylpropyl]-2,3-butadienyl}-2,4,6-trimethylphenylsulfonamide
Conditions | Yield |
---|---|
With sodium hydride In N,N-dimethyl-formamide at 0℃; | 99% |
2-(benzhydrylidene-amino)-N-benzyl-N-methoxy-acetamide
2-methyl-3-bromo-1-propene
Conditions | Yield |
---|---|
With potassium hydroxide; N-spiro chiral quaternary ammonium bromide In toluene at 0℃; for 6h; | 99% |
benzyl 3,3-difluoro-2-[(4-methoxyphenyl)imino]-5-hexenoate
2-methyl-3-bromo-1-propene
benzyl 3,3-difluoro-2-(4-methoxyphenyl)amino-2-(2-methylallyl)-5-hexenoate
Conditions | Yield |
---|---|
Stage #1: 2-methyl-3-bromo-1-propene With zinc In tetrahydrofuran at 50℃; for 0.666667h; Stage #2: benzyl 3,3-difluoro-2-[(4-methoxyphenyl)imino]-5-hexenoate In tetrahydrofuran at -40℃; for 0.166667h; | 99% |
Stage #1: 2-methyl-3-bromo-1-propene With zinc In tetrahydrofuran at 50℃; for 0.75h; Inert atmosphere; Stage #2: benzyl 3,3-difluoro-2-[(4-methoxyphenyl)imino]-5-hexenoate In tetrahydrofuran at -40℃; Inert atmosphere; chemoselective reaction; | 99% |
Conditions | Yield |
---|---|
With potassium carbonate In water; N,N-dimethyl-formamide | 99% |
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