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140200-76-6

Basic Information
CAS No.: 140200-76-6
Name: 1,5-DIBROMO-PENTAN-3-ONE
Article Data: 6
Molecular Structure:
Molecular Structure of 140200-76-6 (1,5-DIBROMO-PENTAN-3-ONE)
Formula: C5H8 Br2 O
Molecular Weight: 243.926
Synonyms: 1,5-DIBROMO-PENTAN-3-ONE
Density: 1.813g/cm3
Melting Point: 89.7-90.5 °C
Boiling Point: 259.1°C at 760 mmHg
Flash Point: 101.269°C
PSA: 17.07000
LogP: 2.12550
Synthetic route
128312-82-3

1-(2-bromoethyl)cyclopropan-1-ol

140200-76-6

α,α'-dibromopentan-3-one

Conditions
ConditionsYield
With N-Bromosuccinimide In tetrachloromethane at 20℃; for 2h;81%
With N-Bromosuccinimide In tetrachloromethane for 14h; Reflux;77%
With N-Bromosuccinimide In tetrachloromethane at 0 - 25℃; for 16h;68%
140200-76-6

α,α'-dibromopentan-3-one

1890-28-4

divinylketone

Conditions
ConditionsYield
With triethylamine In dichloromethane for 19h;93%
With sodium carbonate under 65 - 80 Torr; Heating;78%
107-21-1

ethylene glycol

140200-76-6

α,α'-dibromopentan-3-one

164987-79-5

1,5-Dibromopentan-3-one ethylene ketal

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene for 24h; Heating;86%
With pyridinium p-toluenesulfonate; orthoformic acid triethyl ester at 20℃; for 18h;32%
1613244-28-2

(S)-2-amino-1-(phenanthridin-5(6H)-yl)propan-1-one

140200-76-6

α,α'-dibromopentan-3-one

1613244-29-3

(S)-1-(1-oxo-1-(phenanthridin-5(6H)-yl)propan-2-yl)piperidin-4-one

Conditions
ConditionsYield
With sodium hydrogencarbonate In methanol at 60℃; for 0.5h; Reflux;75%
140200-76-6

α,α'-dibromopentan-3-one

1072-72-6

Tetrahydrothiopyran-4-one

Conditions
ConditionsYield
With sodium sulfide In methanol for 1h; Heating;71%
140200-76-6

α,α'-dibromopentan-3-one

1,5-dibromopentane-3-ol

Conditions
ConditionsYield
With methanol; sodium tetrahydroborate at 0 - 25℃; for 3h;67%

3-(2-cyclopropyl-4-iodo-1H-imidazol-1-yl)bicyclo[1.1.1]pentan-1-amine bis(2,2,2-trifluoroacetate)

140200-76-6

α,α'-dibromopentan-3-one

1-(3-(2-cyclopropyl-4-iodo-1H-imidazol-1-yl)bicyclo[1.1.1]pentan-1-yl)piperidin-4-one

Conditions
ConditionsYield
With potassium carbonate In acetonitrile at 75℃; for 16h;56%
140200-76-6

α,α'-dibromopentan-3-one

126-30-7

2,2-Dimethyl-1,3-propanediol

A

187850-33-5

2,2-bis(2-bromoethyl)-5,5-dimethyl-1,3-dioxane

B

187850-34-6

2-(2-bromoethyl)-5,5-dimethyl-2-ethenyl-1,3-dioxane

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene for 60h; Heating;A 22%
B 50%
140200-76-6

α,α'-dibromopentan-3-one

167106-10-7

furfuryl alcohol α-(tributylstannyl)methyl ether

(1S*,2S*,3S*,4S*,7R*)-2,4-dimethyl-9-oxabicyclo<5.3.0>dec-5-en-1,3-diol

Conditions
ConditionsYield
With methyllithium; silver; L-Selectride; zinc 2.) THF, 195 K; 3.) THF, 195 K to 273 K, 2 h; Yield given. Multistep reaction;
140200-76-6

α,α'-dibromopentan-3-one

187850-34-6

2-(2-bromoethyl)-5,5-dimethyl-2-ethenyl-1,3-dioxane

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 22 percent / TsOH*H2O / benzene / 60 h / Heating
2: 58 percent / TsOH*H2O / benzene / 60 h / Heating
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    Used in medicine Application:Used in medicine

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