Product Name

  • Name

    Rimonabant

  • EINECS
  • CAS No. 168273-06-1
  • Article Data35
  • CAS DataBase
  • Density 1.41 g/cm3
  • Solubility
  • Melting Point 230-240oC
  • Formula C22H21Cl3N4O
  • Boiling Point 627.6oC at 760 mmHg
  • Molecular Weight 463.794
  • Flash Point 333.3oC
  • Transport Information
  • Appearance White or almost white crystalline powder
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 168273-06-1 (Rimonabant)
  • Hazard Symbols
  • Synonyms 1-(2,4-Dichlorophenyl)-5-(4-chlorophenyl)-4-methyl-N-(piperidin-1-yl)-1H-pyrazole-3-carboxamide;5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylicacid N-(piperidin-1-yl)amide;A 281;Acomplia;N-Piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxamide;SR 141716;
  • PSA 50.16000
  • LogP 6.26740

Synthetic route

rimonabant hydrochloride
158681-13-1

rimonabant hydrochloride

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With methanol; potassium hydroxide; water at 0 - 5℃; for 1h;93%
With sodium hydroxide In methanol; water pH=8.5;
With sodium hydroxide In methanol; water at 28 - 30℃; for 0.666667h; pH=11;
1-Aminopiperidine
2213-43-6

1-Aminopiperidine

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate
158941-22-1

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With trimethylaluminum In tetrahydrofuran; toluene at 125℃; for 0.0333333h;88%
magnesium chloride In acetonitrile for 2h; Product distribution / selectivity; Heating / reflux;83%
magnesium bromide In tetrahydrofuran for 2h; Product distribution / selectivity; Heating / reflux;81%
5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazole-3-carboxylic acid methyl ester
168272-78-4

5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazole-3-carboxylic acid methyl ester

1-Aminopiperidine
2213-43-6

1-Aminopiperidine

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
magnesium chloride In tetrahydrofuran for 2h; Product distribution / selectivity; Heating / reflux;82%
magnesium chloride In acetonitrile for 2h; Product distribution / selectivity; Heating / reflux;80%
magnesium bromide In tetrahydrofuran for 2h; Product distribution / selectivity; Heating / reflux;79%
1-Aminopiperidine
2213-43-6

1-Aminopiperidine

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl chloride
168273-05-0

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl chloride

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With triethylamine In dichloromethane at 20℃; for 12h;79%
With triethylamine In dichloromethane at 20℃; for 1.5h; Substitution;66%
With triethylamine Yield given;
phenyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylate
1030616-35-3

phenyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylate

1-Aminopiperidine
2213-43-6

1-Aminopiperidine

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
magnesium chloride In acetonitrile for 2h; Product distribution / selectivity; Heating / reflux;77%
magnesium chloride In acetonitrile at 80℃; for 2 - 4h; Product distribution / selectivity;
N-aminopiperidine hydrochloride
63234-70-8

N-aminopiperidine hydrochloride

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate
158941-22-1

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With triethylamine; magnesium chloride In acetonitrile for 4h; Product distribution / selectivity; Heating / reflux;77%
Stage #1: N-aminopiperidine hydrochloride With potassium tert-butylate In acetonitrile at 20℃; for 0.5h;
Stage #2: ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate; magnesium chloride In acetonitrile for 4h; Product distribution / selectivity; Heating / reflux;
61%
N-aminopiperidine hydrogen sulphate
1030616-37-5

N-aminopiperidine hydrogen sulphate

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate
158941-22-1

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With triethylamine; magnesium chloride In acetonitrile for 4h; Product distribution / selectivity; Heating / reflux;77%
1-Aminopiperidine
2213-43-6

1-Aminopiperidine

rimonabant acid
162758-35-2

rimonabant acid

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Stage #1: rimonabant acid With benzotriazol-1-ol In dichloromethane for 0.166667h;
Stage #2: With dicyclohexyl-carbodiimide In dichloromethane at 25℃;
Stage #3: 1-Aminopiperidine Further stages;
72%
With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 72h;68%
Stage #1: rimonabant acid With thionyl chloride In methyl cyclohexane at 83℃; for 3h; Heating / reflux;
Stage #2: With triethylamine In tetrahydrofuran; methyl cyclohexane at 12 - 20℃; for 0.25h;
Stage #3: 1-Aminopiperidine With triethylamine In tetrahydrofuran; methyl cyclohexane at 12 - 20℃; Product distribution / selectivity;
With 1,1'-carbonyldiimidazole In tetrahydrofuran at 65 - 70℃; for 2.33333h; Product distribution / selectivity;
With boric acid In toluene at 29 - 112℃; for 12.83h; Product distribution / selectivity;
5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid(2,6-benzotriazolyl-piperidin-1-yl)amide
1040405-33-1

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid(2,6-benzotriazolyl-piperidin-1-yl)amide

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With sodium tetrahydroborate In tetrahydrofuran at 20℃;46%
1-Aminopiperidine
2213-43-6

1-Aminopiperidine

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl chloride
168273-05-0

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl chloride

A

rimonabant
168273-06-1

rimonabant

B

N-(piperidin-1-yl)-3-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-5-carboxamide

N-(piperidin-1-yl)-3-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-5-carboxamide

Conditions
ConditionsYield
With triethylamine In dichloromethane at 20℃; for 2h;A 11.5 g
B 645 mg
4-(4-chlorophenyl)-3-methyl-2,4-dioxo-N-piperidin-1-yl-butyramide
952734-85-9

4-(4-chlorophenyl)-3-methyl-2,4-dioxo-N-piperidin-1-yl-butyramide

2,4-dichlorophenyl hydrazine hydrochloride
5446-18-4

2,4-dichlorophenyl hydrazine hydrochloride

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
In ethanol for 8h; Product distribution / selectivity;
5-(4-chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazole-3-carboxylic acid benzotriazol-1-yl ester
952734-87-1

5-(4-chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazole-3-carboxylic acid benzotriazol-1-yl ester

1-Aminopiperidine
2213-43-6

1-Aminopiperidine

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With potassium carbonate In dichloromethane at 30℃; for 0.5h; Product distribution / selectivity;
N-piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-3-pyrazole carboxamide fumarate
169544-43-8

N-piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-3-pyrazole carboxamide fumarate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With sodium hydroxide; water; polyoxyethylene sorbitan monostearate at 30 - 40℃; for 4h; pH=9; Polyoxyethylene; Product distribution / selectivity;
With sodium hydroxide; polyoxyethylene sorbitan monooleate In water at 25 - 40℃; for 4h; pH=9; Product distribution / selectivity;
N-piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-3-pyrazole carboxamide hydrogensulphate
169544-44-9

N-piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-3-pyrazole carboxamide hydrogensulphate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With ammonia; water at 25 - 30℃; for 4h; pH=9; Product distribution / selectivity;
With ammonia; water at 25 - 30℃; for 4h; pH=9; Product distribution / selectivity;
4'-chloropropiophenone
6285-05-8

4'-chloropropiophenone

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: 65 percent / LDA; potassium t-butoxide / diethyl ether; tetrahydrofuran; heptane / 2.5 h / 20 °C
2.1: HCl / H2O; CH2Cl2
3.1: ethanol / 2.5 h / Heating
3.2: 89 percent / NaOH / ethanol / 2 h / Heating
4.1: 94 percent / SOCl2 / toluene / 6 h / Heating
5.1: 11.5 g / triethylamine / CH2Cl2 / 2 h / 20 °C
View Scheme
Multi-step reaction with 4 steps
1.1: lithium hexamethyldisilazane / methyl cyclohexane / 3 h / 20 °C
1.2: 16 h
1.3: Cooling with ice; Reflux
2.1: potassium hydroxide / ethanol / 12 h / 50 °C
3.1: thionyl chloride / toluene / 2.5 h / 110 °C
4.1: N-ethyl-N,N-diisopropylamine / chloroform / 4 h / 0 - 20 °C
View Scheme
Multi-step reaction with 4 steps
1.1: lithium hexamethyldisilazane / methyl cyclohexane / 2.5 h / 15 - 25 °C / Inert atmosphere
1.2: Inert atmosphere
2.1: sulfuric acid / ethanol; water / 14 h / 79 °C / Inert atmosphere
3.1: N,N-dimethyl-formamide / toluene / 0 °C / Inert atmosphere
3.2: 4 h / 100 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 0 - 20 °C / Inert atmosphere
View Scheme
4-(4-chlorophenyl)-3-methyl-2,4-dioxobutyric acid ethyl ester
169544-41-6

4-(4-chlorophenyl)-3-methyl-2,4-dioxobutyric acid ethyl ester

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: ethanol / 2.5 h / Heating
1.2: 89 percent / NaOH / ethanol / 2 h / Heating
2.1: 94 percent / SOCl2 / toluene / 6 h / Heating
3.1: 11.5 g / triethylamine / CH2Cl2 / 2 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
2.1: propionic acid / 16 h / Heating / reflux
2.2: 20 h / 140 - 145 °C
View Scheme
Multi-step reaction with 2 steps
1: triethylamine / 3 h
2: ethanol / 8 h
View Scheme
rimonabant acid
162758-35-2

rimonabant acid

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 94 percent / SOCl2 / toluene / 6 h / Heating
2: 11.5 g / triethylamine / CH2Cl2 / 2 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: DMF / CH2Cl2 / 3 h / 20 °C
2: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: thionyl chloride / toluene / 2.5 h / 110 °C
2: N-ethyl-N,N-diisopropylamine / chloroform / 4 h / 0 - 20 °C
View Scheme
(Z)-4-(4-chloro-phenyl)-2-hydroxy-3-methyl-4-oxo-but-2-enoic acid ethyl ester lithium salt

(Z)-4-(4-chloro-phenyl)-2-hydroxy-3-methyl-4-oxo-but-2-enoic acid ethyl ester lithium salt

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: HCl / H2O; CH2Cl2
2.1: ethanol / 2.5 h / Heating
2.2: 89 percent / NaOH / ethanol / 2 h / Heating
3.1: 94 percent / SOCl2 / toluene / 6 h / Heating
4.1: 11.5 g / triethylamine / CH2Cl2 / 2 h / 20 °C
View Scheme
4'-chloropropiophenone
6285-05-8

4'-chloropropiophenone

lithium-bromoacetate

lithium-bromoacetate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: 95 percent / bromine / acetic acid / 1.5 h / 5 - 20 °C
2: 42 percent / NaH / tetrahydrofuran / 1.5 h / Heating
3: sodium / ethanol / 2.5 h / 0 °C
4: 45 percent / NaOH / ethanol / 1.5 h / Alkaline hydrolysis
5: DMF / CH2Cl2 / 3 h / 20 °C
6: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
2-bromo-1-(4-chlorophenyl)-1-propanone
877-37-2

2-bromo-1-(4-chlorophenyl)-1-propanone

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 42 percent / NaH / tetrahydrofuran / 1.5 h / Heating
2: sodium / ethanol / 2.5 h / 0 °C
3: 45 percent / NaOH / ethanol / 1.5 h / Alkaline hydrolysis
4: DMF / CH2Cl2 / 3 h / 20 °C
5: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
2,4-Dichloroaniline
554-00-7

2,4-Dichloroaniline

2-chloro-trans-cinnamoyl chloride

2-chloro-trans-cinnamoyl chloride

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 24 percent HCl; NaNO2 / H2O / 0 - 5 °C
2: sodium / ethanol / 2.5 h / 0 °C
3: 45 percent / NaOH / ethanol / 1.5 h / Alkaline hydrolysis
4: DMF / CH2Cl2 / 3 h / 20 °C
5: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
2,4-dichlorophenyldiazonium chloride
13617-98-6

2,4-dichlorophenyldiazonium chloride

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium / ethanol / 2.5 h / 0 °C
2: 45 percent / NaOH / ethanol / 1.5 h / Alkaline hydrolysis
3: DMF / CH2Cl2 / 3 h / 20 °C
4: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate
158941-22-1

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 45 percent / NaOH / ethanol / 1.5 h / Alkaline hydrolysis
2: DMF / CH2Cl2 / 3 h / 20 °C
3: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: potassium hydroxide / ethanol / 12 h / 50 °C
2: thionyl chloride / toluene / 2.5 h / 110 °C
3: N-ethyl-N,N-diisopropylamine / chloroform / 4 h / 0 - 20 °C
View Scheme
Multi-step reaction with 3 steps
1: potassium hydroxide; water / methanol / 3 h / Heating / reflux
2: thionyl chloride / toluene / 3 h / Heating / reflux
3: triethylamine / dichloromethane / 3 h / 0 - 20 °C
View Scheme
ethyl [2-acetyl-4-(4-chlorophenyl)-3-methyl-4-oxo]butyrate
162758-34-1

ethyl [2-acetyl-4-(4-chlorophenyl)-3-methyl-4-oxo]butyrate

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium / ethanol / 2.5 h / 0 °C
2: 45 percent / NaOH / ethanol / 1.5 h / Alkaline hydrolysis
3: DMF / CH2Cl2 / 3 h / 20 °C
4: 66 percent / triethylamine / CH2Cl2 / 1.5 h / 20 °C
View Scheme
1,5-dibromo-pentane
111-24-0

1,5-dibromo-pentane

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbohydrazide
443141-90-0

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbohydrazide

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With sodium carbonate In acetonitrile for 45h; Heating / reflux;
1-Aminopiperidine
2213-43-6

1-Aminopiperidine

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl chloride
168273-05-0

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl chloride

A

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid [5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl]piperidin-1-yl-amide
1028183-02-9

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid [5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carbonyl]piperidin-1-yl-amide

B

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
With potassium carbonate In dichloromethane at 10 - 30℃; Product distribution / selectivity;
1-Aminopiperidine
2213-43-6

1-Aminopiperidine

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate
158941-22-1

ethyl 1-(2,4-dichlorophenyl)-4-methyl-5-(4-chlorophenyl)-1H-pyrazole-3-carboxylate

A

rimonabant acid
162758-35-2

rimonabant acid

B

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
magnesium chloride In tetrahydrofuran at 80℃; for 2 - 4h; Product distribution / selectivity;
magnesium chloride In acetonitrile at 80℃; for 2 - 4h; Product distribution / selectivity;
magnesium chloride at 80℃; for 2 - 4h; Product distribution / selectivity;
5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazole-3-carboxylic acid methyl ester
168272-78-4

5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazole-3-carboxylic acid methyl ester

1-Aminopiperidine
2213-43-6

1-Aminopiperidine

A

rimonabant acid
162758-35-2

rimonabant acid

B

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
magnesium chloride In acetonitrile at 80℃; for 2 - 4h; Product distribution / selectivity;
phenyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylate
1030616-35-3

phenyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylate

1-Aminopiperidine
2213-43-6

1-Aminopiperidine

A

rimonabant acid
162758-35-2

rimonabant acid

B

rimonabant
168273-06-1

rimonabant

Conditions
ConditionsYield
In acetonitrile at 80℃; for 2 - 4h; Product distribution / selectivity;
propan-1-ol
71-23-8

propan-1-ol

rimonabant
168273-06-1

rimonabant

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)pyrazole-3-carboxamide n-propanol solvate

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)pyrazole-3-carboxamide n-propanol solvate

Conditions
ConditionsYield
at 4 - 20℃; Heating / reflux;100%
at 5 - 50℃; for 5h;
N-aminopiperidine hydrochloride
63234-70-8

N-aminopiperidine hydrochloride

rimonabant acid
162758-35-2

rimonabant acid

rimonabant
168273-06-1

rimonabant

rimonabant hydrochloride
158681-13-1

rimonabant hydrochloride

Conditions
ConditionsYield
Stage #1: rimonabant acid With 1,1'-carbonyldiimidazole In tetrahydrofuran at 20℃; for 6h;
Stage #2: N-aminopiperidine hydrochloride With triethylamine In tetrahydrofuran at 60℃; for 1.5h;
Stage #3: rimonabant With hydrogenchloride
92.7%
1,3-dibromo-propane
109-64-8

1,3-dibromo-propane

rimonabant
168273-06-1

rimonabant

bromopropyl-[N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide]

bromopropyl-[N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide]

Conditions
ConditionsYield
With potassium carbonate In acetonitrile at 20℃; for 16h; Reflux; Inert atmosphere;70%
ethyl bromoacetate
105-36-2

ethyl bromoacetate

rimonabant
168273-06-1

rimonabant

1'-ethylacetyl-[N-(piperidinyl-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide]

1'-ethylacetyl-[N-(piperidinyl-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide]

Conditions
ConditionsYield
With potassium carbonate In acetonitrile for 48h; Reflux; Inert atmosphere;55%
rimonabant
168273-06-1

rimonabant

6,9-dichloro-3-methyl-pyrazolo[1,5-f]phenanthridine-2-carboxylic acid piperidin-1-ylamide

6,9-dichloro-3-methyl-pyrazolo[1,5-f]phenanthridine-2-carboxylic acid piperidin-1-ylamide

Conditions
ConditionsYield
In acetonitrile for 2.5h; Irradiation;42%
rimonabant
168273-06-1

rimonabant

A

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichloro-6-iodophenyl)-4-methyl-1H-pyrazole-3-carboxamide
170937-36-7

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichloro-6-iodophenyl)-4-methyl-1H-pyrazole-3-carboxamide

B

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichloro-3-iodophenyl)-4-methyl-1H-pyrazole-3-carboxamide

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichloro-3-iodophenyl)-4-methyl-1H-pyrazole-3-carboxamide

Conditions
ConditionsYield
With n-butyllithium; 1,10-Phenanthroline; 1-chloro-2-iodoethane In diethyl ether at -78 - 20℃;A 17%
B 14%
rimonabant
168273-06-1

rimonabant

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichloro-6-iodophenyl)-4-methyl-1H-pyrazole-3-carboxamide
170937-36-7

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-(2,4-dichloro-6-iodophenyl)-4-methyl-1H-pyrazole-3-carboxamide

Conditions
ConditionsYield
With n-butyllithium; 1-chloro-2-iodoethane In diethyl ether at -15℃;
rimonabant
168273-06-1

rimonabant

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)pyrazole-3-carboxamide hydrate
945634-91-3

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)pyrazole-3-carboxamide hydrate

Conditions
ConditionsYield
Stage #1: rimonabant In dichloromethane at 25 - 30℃; for 0.166667h;
Stage #2: With water at 25 - 30℃; for 1h; Product distribution / selectivity;
With water In acetone at 25 - 50℃; for 6h; Product distribution / selectivity;
With water In methanol at 25 - 55℃; for 2h; Product distribution / selectivity;
rimonabant
168273-06-1

rimonabant

butan-1-ol
71-36-3

butan-1-ol

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)pyrazole-3-carboxamide n-butanol solvate

5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)pyrazole-3-carboxamide n-butanol solvate

Conditions
ConditionsYield
at 5 - 50℃; for 5h;
rimonabant
168273-06-1

rimonabant

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-([6-3H]-2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide

N-(piperidin-1-yl)-5-(4-chlorophenyl)-1-([6-3H]-2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 17 percent / n-butyllithium; 1-chloro-2-iodoethane; 1,10-phenanthroline / diethyl ether / -78 - 20 °C
2: tritium; Et3N / 10 percent Pd-C / ethanol / 3.5 h
View Scheme

Rimonabant Specification

The 1H-Pyrazole-3-carboxamide,5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-1-piperidinyl- is an organic compound with the formula C22H21Cl3N4O. The IUPAC name of this chemical is 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-piperidin-1-ylpyrazole-3-carboxamide. With the CAS registry number 168273-06-1, it is also named as Rimonabant. The product's category is Weight Loss.

Physical properties about 1H-Pyrazole-3-carboxamide,5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-1-piperidinyl- are: (1)ACD/LogP: 6.14; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 6.14; (4)ACD/LogD (pH 7.4): 6.14; (5)ACD/BCF (pH 5.5): 27061.6; (6)ACD/BCF (pH 7.4): 27198.54; (7)ACD/KOC (pH 5.5): 51715.72; (8)ACD/KOC (pH 7.4): 51977.41; (9)#H bond acceptors: 5; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 41.37 Å2; (13)Index of Refraction: 1.668; (14)Molar Refractivity: 122.23 cm3; (15)Molar Volume: 327.8 cm3; (16)Polarizability: 48.45×10-24cm3; (17)Surface Tension: 51.2 dyne/cm; (18)Density: 1.41 g/cm3.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(NN1CCCCC1)c4nn(c2ccc(Cl)cc2Cl)c(c3ccc(Cl)cc3)c4C
(2)InChI: InChI=1/C22H21Cl3N4O/c1-14-20(22(30)27-28-11-3-2-4-12-28)26-29(19-10-9-17(24)13-18(19)25)21(14)15-5-7-16(23)8-6-15/h5-10,13H,2-4,11-12H2,1H3,(H,27,30)
(3)InChIKey: JZCPYUJPEARBJL-UHFFFAOYAO
(4)Std. InChI: InChI=1S/C22H21Cl3N4O/c1-14-20(22(30)27-28-11-3-2-4-12-28)26-29(19-10-9-17(24)13-18(19)25)21(14)15-5-7-16(23)8-6-15/h5-10,13H,2-4,11-12H2,1H3,(H,27,30)
(5)Std. InChIKey: JZCPYUJPEARBJL-UHFFFAOYSA-N

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