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31849-78-2

Basic Information
CAS No.: 31849-78-2
Name: 1-BROMO-1-BUTENE
Article Data: 7
Molecular Structure:
Molecular Structure of 31849-78-2 (1-BROMO-1-BUTENE)
Formula: C4H7 Br
Molecular Weight: 135.004
Synonyms: 1-Butene,1-bromo-, (Z)- (8CI); cis-1-Bromo-1-butene; cis-1-Butenyl bromide
Density: 1.3119
Melting Point: -115.07°C (estimate)
Boiling Point: 92.85°C
PSA: 0.00000
LogP: 2.30500
Synthetic route
79912-57-5, 139185-84-5

(2R*,3S*)-2,3-dibromopentanoic acid

31849-78-2

(Z)-1-bromo-1-butene

Conditions
ConditionsYield
With sodium hydrogencarbonate In N,N-dimethyl-formamide at 70℃; under 97.5098 Torr; for 1h; optical yield given as %de;87%
With sodium hydrogencarbonate In N,N-dimethyl-formamide at 70℃; under 100 Torr;61%
With triethylamine In N,N-dimethyl-formamide for 0.0166667h; microwave irradiation;899 mg
13991-37-2

trans-2-pentenoic acid

31849-78-2

(Z)-1-bromo-1-butene

Conditions
ConditionsYield
Stage #1: trans-2-pentenoic acid With bromine
Stage #2: With sodium carbonate In N,N-dimethyl-formamide Further stages.;
54%
With bromine; sodium carbonate 1.) -78 deg C, 2.) DMF, 60 deg C; Yield given. Multistep reaction;
79912-57-5

acide dibromo-2,3 pentanoique

A

31849-78-2

(Z)-1-bromo-1-butene

B

32620-08-9

Z-1-bromobutene

Conditions
ConditionsYield
With sodium hydrogencarbonate In N,N-dimethyl-formamide at 5℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
32121-06-5

1,3-Dibromo-1-propene

MeMgHal

MeMgHal

31849-78-2

(Z)-1-bromo-1-butene

Conditions
ConditionsYield
In diethyl ether at -10℃;
31849-78-2

(Z)-1-bromo-1-butene

1214742-93-4

11-dodecynal diethyl acetal

1214742-94-5

(Z)-1,1-diethoxyhexadec-13-en-11-yne

Conditions
ConditionsYield
With propylamine; copper(l) iodide; tetrakis(triphenylphosphine) palladium(0) In benzene at 20 - 40℃; Sonogashira-Hagihara coupling; Inert atmosphere;100%
31849-78-2

(Z)-1-bromo-1-butene

85199-06-0

2,5-dimethylphenyl boronic acid

C12H16

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In water; toluene at 90℃;99%
31849-78-2

(Z)-1-bromo-1-butene

13922-41-3

1-Naphthylboronic acid

C14H14

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0); sodium hydroxide In tetrahydrofuran; water at 70℃;92%
31849-78-2

(Z)-1-bromo-1-butene

6783-05-7

trans-2-phenylvinylboronic acid

39491-61-7

(1E,3Z)-1-phenylhexa-1,3-diene

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0); sodium hydroxide In tetrahydrofuran; water at 70℃;92%
31849-78-2

(Z)-1-bromo-1-butene

1377322-03-6

(+)-(2R,2'S,5S)-2-allyl-5-[2'-(benzyloxy)heptyl]-N-(4-methoxybenzyl)pyrrolidine-1-carboxamide

1377322-04-7

(+)-(Z,2'S,3R,4aR,7S)-7-[2'-(benzyloxy)heptyl]-2-(4-methoxybenzyl)-3-(pent-2-en-1-yl)hexahydropyrrolo[1,2-c]pyrimidin-1(2H)-one

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); tricyclohexylphosphine tetrafluoroborate; sodium t-butanolate In toluene at 110℃; for 14h; Inert atmosphere; optical yield given as %de;91%
31849-78-2

(Z)-1-bromo-1-butene

C19H24N2

C23H30N2

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0); (11aR)-(+)-10,11,12,13-tetrahydrodiindeno-[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-bis[(R)-1-phenylethyl]amine; sodium t-butanolate In 5,5-dimethyl-1,3-cyclohexadiene at 125℃; enantioselective reaction;91%
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    Product Name: 1-BROMO-1-BUTENE CAS: 31849-78-2 MF: C4H7Br MW: 135 EINECS: Product Categories: Mol File: 31849-78-2.mol 1-BROMO-1-BUTENE Structure 1-BROMO-1-BUTENE Chemical Properties Melting point -115.07°C (estimate)

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