high quality ,iso , cgmp . accept the supplier audit . in stock now ,capacity is flexible support the documents Appearance:Colorless to Light yellow liquid Storage: protect from light seal room temperature Package:DRUM Application:Key interm
Cas:3355-28-0
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inquiryDayangchem'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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inquiryLinagliptin[CAS:668270-12-0] 1-Bromo-2-Butyne[CAS:3355-28-0] HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture. With about ten years of business experiences on the ma
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inquiryProduct Description Product website: http://www.finerchem.com/pro01en/id/1054.html Product Name 1-Bromo-2-butyne CAS No. 3355-28-0
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Min.Order:1 Gram
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inquiry1-BROMO-2-BUTYNE Basic information Product Name: 1-BROMO-2-BUTYNE Synonyms: 1-BROMO-2-BUTYNE;2-BUTYNYL BROMIDE;1-BROMO-2-BUTYNE 98%;1-Bromo-2-butyne,98%;1-Bromobut-
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inquiryAppearance & Physical State: Clear pale yellow-greenish liquid Density: 1.519 Boiling Point: 40-41ºC (20 mmHg) Flash Point: 36ºC Refra
Cas:3355-28-0
Min.Order:100 Metric Ton
Negotiable
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inquiryOur Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
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Min.Order:0 Metric Ton
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Type:Lab/Research institutions
inquiryConditions | Yield |
---|---|
With bromine; triphenylphosphine In dichloromethane at 0℃; for 1h; | 100% |
With phosphorus tribromide | 89% |
With bromine; triphenylphosphine In dichloromethane at 0℃; for 1h; | 89% |
2-But-2-ynyl-1,3-diisopropyl-isourea
A
1,3-diisopropylurea
B
1-Bromo-2-butyne
Conditions | Yield |
---|---|
With trifluorormethanesulfonic acid; tetrabutylammomium bromide In dichloromethane at 40℃; for 15h; | A n/a B 58% |
Conditions | Yield |
---|---|
With Acetyl bromide; zinc dibromide at 60 - 65℃; |
tetra-N-methyl-phosphorodiamidic acid but-2-ynyl ester
1-Bromo-2-butyne
Conditions | Yield |
---|---|
With phosphorus tribromide In diethyl ether for 4h; Heating; |
tetra-N-methyl-phosphorodiamidic acid prop-2-ynyl ester
methyl iodide
1-Bromo-2-butyne
Conditions | Yield |
---|---|
(i) NaH, (ii) PBr3; Multistep reaction; |
Conditions | Yield |
---|---|
With pyridine In (2S)-N-methyl-1-phenylpropan-2-amine hydrate; pentane | 11.0 g (58%) |
With pyridine In (2S)-N-methyl-1-phenylpropan-2-amine hydrate; pentane | 11.0 g (58%) |
1-Bromo-2-butyne
8,9-anhydroerythromycin A 6,9-hemiacetal
N-2-butynyl-8,9-anhydroerythromycin A 6,9-hemiacetal bromide
Conditions | Yield |
---|---|
In chloroform for 2h; Ambient temperature; | 100% |
1-Bromo-2-butyne
Diethyl methylmalonate
diethyl 2-(but-2-yn-1-yl)-2-methylmalonate
Conditions | Yield |
---|---|
With potassium tert-butylate In tetrahydrofuran at 0℃; for 0.5h; Reagent/catalyst; Solvent; Temperature; Inert atmosphere; | 100% |
Stage #1: Diethyl methylmalonate With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.5h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran at -78℃; for 1h; | 97.6% |
Stage #1: Diethyl methylmalonate With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.5h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran at -78 - 20℃; | 97.6% |
Conditions | Yield |
---|---|
With sodium hydroxide In water; isopropyl alcohol at 70℃; for 15h; | 100% |
With sodium hydroxide In water; isopropyl alcohol at 70℃; for 15h; | 100% |
With sodium hydroxide In water; isopropyl alcohol at 70℃; for 15h; | 100% |
Conditions | Yield |
---|---|
With magnesium; mercury dichloride In tetrahydrofuran at 0℃; for 2h; | 100% |
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol at 20℃; for 1.5h; | 100% |
Stage #1: 2-mercaptophenylethane With sodium hydride In tetrahydrofuran at 20℃; for 0.166667h; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran at 20℃; |
Conditions | Yield |
---|---|
Stage #1: diethyl malonate With sodium hydride In tetrahydrofuran; mineral oil for 0.833333h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran; mineral oil for 2h; | 100% |
Stage #1: diethyl malonate With sodium hydride In tetrahydrofuran; mineral oil for 0.833333h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran; mineral oil for 2h; | 100% |
Stage #1: diethyl malonate With sodium hydride In tetrahydrofuran for 0.833333h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran for 2h; | 97.6% |
1-Bromo-2-butyne
ethyl cyclohexyl [4-(hydroxyphenyl)sulfanyl]acetate
ethyl-{[4-(2-butynyloxy)phenyl]sulfanyl}(cyclohexyl)acetate
Conditions | Yield |
---|---|
100% | |
With potassium carbonate In acetone Heating; |
dimethyl 2-(3,3-dimethoxypropyl)-1,3-propanedioate
1-Bromo-2-butyne
4,4-bis(methoxycarbonyl)-6-octynal dimethyl acetal
Conditions | Yield |
---|---|
Stage #1: dimethyl 2-(3,3-dimethoxypropyl)-1,3-propanedioate With sodium hydride In tetrahydrofuran at 20℃; for 0.333333h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran at 20℃; for 5h; | 100% |
dimethyl 2-(2,2-dimethoxyethyl)-1,3-propanedioate
1-Bromo-2-butyne
3,3-bis(methoxycarbonyl)-5-heptynal dimethyl acetal
Conditions | Yield |
---|---|
Stage #1: dimethyl 2-(2,2-dimethoxyethyl)-1,3-propanedioate With sodium hydride In tetrahydrofuran at 0℃; for 0.5h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran at 20℃; for 4h; | 100% |
Stage #1: dimethyl 2-(2,2-dimethoxyethyl)-1,3-propanedioate With sodium hydride In N,N-dimethyl-formamide at 20℃; for 1h; Stage #2: 1-Bromo-2-butyne With sodium iodide In N,N-dimethyl-formamide at 20℃; for 1h; | 96% |
Conditions | Yield |
---|---|
With potassium hydroxide; N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In tetrahydrofuran for 4h; Heating; | 100% |
Conditions | Yield |
---|---|
With potassium hydroxide; N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In tetrahydrofuran for 4h; Heating; | 100% |
1-Bromo-2-butyne
Conditions | Yield |
---|---|
100% | |
100% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 5h; | 100% |
dansylamide
1-Bromo-2-butyne
N,N-bis(2-butynyl)-5-(dimethylamino)naphthalene-1-sulfonamide
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile for 2h; Reflux; | 100% |
methyl 4-hydroxylbenzoate
1-Bromo-2-butyne
methyl 4-(but-2-yn-1-yloxy)benzoate
Conditions | Yield |
---|---|
With potassium carbonate In butanone at 20℃; for 23h; Reflux; | 100% |
With potassium carbonate In butanone at 20℃; for 23h; Reflux; | 100% |
Stage #1: methyl 4-hydroxylbenzoate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 1h; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide; mineral oil at 19℃; for 20h; Inert atmosphere; | 79% |
5-hydroxy-1-(pyrrolidin-1-yl)pentan-1-one
1-Bromo-2-butyne
5-(but-2-ynyloxy)-1-(pyrrolidin-1-yl)pentan-1-one
Conditions | Yield |
---|---|
Stage #1: 5-hydroxy-1-(pyrrolidin-1-yl)pentan-1-one With sodium hydride In tetrahydrofuran; mineral oil at 0℃; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran; mineral oil at 0 - 20℃; Inert atmosphere; | 100% |
N-{4-[1-(benzenesulfonyl)-1H-indol-2-yl]-4-oxobutyl}benzenesulfonamide
1-Bromo-2-butyne
4-((N-but-2-ynyl)phenylsulfonylamido)-1-(1-phenylsulfonylindol-2-yl)butan-1-one
Conditions | Yield |
---|---|
Stage #1: N-{4-[1-(benzenesulfonyl)-1H-indol-2-yl]-4-oxobutyl}benzenesulfonamide With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 1h; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide; mineral oil at 20℃; for 1h; Inert atmosphere; | 100% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 19h; Inert atmosphere; | 100% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; | 30% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 19h; |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 60℃; Inert atmosphere; | 100% |
With potassium carbonate In acetonitrile at 60℃; for 2h; | 85% |
N-allyl-2-bromo-4,5-dimethoxybenzenesulfonamide
1-Bromo-2-butyne
Conditions | Yield |
---|---|
Stage #1: N-allyl-2-bromo-4,5-dimethoxybenzenesulfonamide With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 1h; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; for 2h; | 100% |
Stage #1: N-allyl-2-bromo-4,5-dimethoxybenzenesulfonamide With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 0.5h; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; for 2h; | 94% |
Conditions | Yield |
---|---|
Stage #1: N-methyl-4-bromobenzylamine; 1-Bromo-2-butyne With potassium carbonate; potassium iodide In toluene; acetonitrile at 40℃; Sealed tube; Stage #2: With hydrogenchloride In diethyl ether Sealed tube; | 100% |
Conditions | Yield |
---|---|
With indium; ammonium chloride In tetrahydrofuran at 0 - 20℃; | 100% |
Conditions | Yield |
---|---|
Stage #1: 3,5-dichlorosalicyclaldehyde With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.25h; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide at 20℃; Inert atmosphere; | 99.6% |
Stage #1: 3,5-dichlorosalicyclaldehyde With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.25h; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide at 20℃; Inert atmosphere; |
Conditions | Yield |
---|---|
With indium; ammonium chloride In tetrahydrofuran at 0 - 20℃; | 99% |
Stage #1: 1-Bromo-2-butyne With sodium iodide; tin(ll) chloride In N,N-dimethyl-formamide at 20℃; for 1h; Stage #2: benzaldehyde In N,N-dimethyl-formamide at 0 - 20℃; | 86% |
Stage #1: 1-Bromo-2-butyne With sodium iodide; tin(ll) chloride In N,N-dimethyl-formamide at 0℃; for 1.5h; Stage #2: benzaldehyde In N,N-dimethyl-formamide | 80% |
Conditions | Yield |
---|---|
indium In water Ambient temperature; | 99% |
With gallium; indium In tetrahydrofuran at 25℃; for 1h; | 75% |
Conditions | Yield |
---|---|
Stage #1: Ethyl isobutyrate With lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; for 0.166667h; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran; hexane at -78℃; for 0.75h; | 99% |
With 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone; lithium diisopropyl amide In tetrahydrofuran at -10℃; | 95% |
With lithium diisopropyl amide | 76% |
Stage #1: Ethyl isobutyrate With lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; for 0.75h; Inert atmosphere; Stage #2: 1-Bromo-2-butyne In tetrahydrofuran; hexane at -78 - 20℃; for 0.4h; Inert atmosphere; | 61% |
4-methoxy-phenol
1-Bromo-2-butyne
1-(but-2-yn-1-yloxy)-4-methoxybenzene
Conditions | Yield |
---|---|
With potassium carbonate In acetone at 60℃; for 6h; | 99% |
With caesium carbonate In N,N-dimethyl-formamide at 20℃; | |
Stage #1: 4-methoxy-phenol With caesium carbonate In N,N-dimethyl-formamide for 0.333333h; Stage #2: 1-Bromo-2-butyne In N,N-dimethyl-formamide at 20℃; |
1-Bromo-2-butyne
ethyl isopropyl [4-(hydroxyphenyl)sulfanyl]acetate
ethyl-{[4-(2-butynyloxy)phenyl]sulfanyl}(isopropyl)acetate
Conditions | Yield |
---|---|
99% | |
With potassium carbonate In acetone Heating; |
3-(1-{6-[4-(2-ethoxycarbonyl-ethyl)-2,5-dioxo-imidazolidin-1-yl]-hexyl}-2,5-dioxoimidazolidin-4-yl)-propionic acid ethyl ester
1-Bromo-2-butyne
Conditions | Yield |
---|---|
With potassium carbonate In acetone Heating; | 99% |
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