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13889-98-0

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13889-98-0 Usage

Chemical Properties

clear light yellow liquid after melting

Uses

1-Acetylpiperazine may be used in the synthesis of series of 7-alkoxyl substituted indolizinoquinoline-5,12-dione derivatives and 2-substituted-N-(naphth-1-ylmethyl)-pyrimidin-4-amines and 2-substituted-N-benzhydrylpyrimidin-4-amines.

General Description

Infrared and Raman spectra of 1-acetylpiperazine have been recorded in the region of 4000-40cm-1.

Purification Methods

Purify 1-acetylpiperazine by recrystallisation from 40% aqueous EtOH or from EtOH/Et2O. It is an irritant, and is hygroscopic. The hydrochloride has m 191o (from EtOH), and the tosylate salt has m 148-149o (from EtOH/EtOAc, 1:16). The free base, however, cannot be isolated by basifying the tosylate salt and extraction with CH2Cl2. [Jacobi Chem Ber 66 113 1933, Mosher et al. J Am Chem Soc 75 4949 1953, Hall J Am Chem Soc 78 2570 1956, Beilstein 23 IV 1786.]

Check Digit Verification of cas no

The CAS Registry Mumber 13889-98-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,8,8 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 13889-98:
(7*1)+(6*3)+(5*8)+(4*8)+(3*9)+(2*9)+(1*8)=150
150 % 10 = 0
So 13889-98-0 is a valid CAS Registry Number.
InChI:InChI=1/C6H12N2O/c1-6(9)8-4-2-7-3-5-8/h7H,2-5H2,1H3/p+1

13889-98-0 Well-known Company Product Price

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  • Alfa Aesar

  • (B20200)  1-Acetylpiperazine, 99%   

  • 13889-98-0

  • 5g

  • 385.0CNY

  • Detail
  • Alfa Aesar

  • (B20200)  1-Acetylpiperazine, 99%   

  • 13889-98-0

  • 10g

  • 654.0CNY

  • Detail
  • Alfa Aesar

  • (B20200)  1-Acetylpiperazine, 99%   

  • 13889-98-0

  • 25g

  • 1220.0CNY

  • Detail
  • Alfa Aesar

  • (B20200)  1-Acetylpiperazine, 99%   

  • 13889-98-0

  • 50g

  • 2074.0CNY

  • Detail
  • Alfa Aesar

  • (B20200)  1-Acetylpiperazine, 99%   

  • 13889-98-0

  • 100g

  • 4130.0CNY

  • Detail
  • Alfa Aesar

  • (B20200)  1-Acetylpiperazine, 99%   

  • 13889-98-0

  • 250g

  • 8775.0CNY

  • Detail
  • Aldrich

  • (359513)  1-Acetylpiperazine  99%

  • 13889-98-0

  • 359513-5G

  • 637.65CNY

  • Detail
  • Aldrich

  • (359513)  1-Acetylpiperazine  99%

  • 13889-98-0

  • 359513-25G

  • 2,359.89CNY

  • Detail

13889-98-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name 1-Acetylpiperazine

1.2 Other means of identification

Product number -
Other names 1-(Piperazin-1-yl)ethanone

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:13889-98-0 SDS

13889-98-0Synthetic route

1-Acetyl-4-(t-butyloxycarbonyl)piperazine

1-Acetyl-4-(t-butyloxycarbonyl)piperazine

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
With hydrogenchloride In ethyl acetate100%
With trifluoroacetic acid In dichloromethane at 25℃; for 0.5h;88.8%
Acidic conditions;
piperazine
110-85-0

piperazine

1-acetyl-2,3,4,6,7,8-hexahydropyrrolo[1,2-a]pyrimidinium tetraphenylborate
1363906-80-2

1-acetyl-2,3,4,6,7,8-hexahydropyrrolo[1,2-a]pyrimidinium tetraphenylborate

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In acetonitrile at 80℃; for 1h; Inert atmosphere;99%
piperazine
110-85-0

piperazine

1,3-diacetyl-5-methyl-2-oxo-2,3-dihydro-1H-imidazole-4-carboxylic acid ethyl ester
82831-12-7

1,3-diacetyl-5-methyl-2-oxo-2,3-dihydro-1H-imidazole-4-carboxylic acid ethyl ester

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In dichloromethane at 20℃; for 1.3h;94%
piperazine
110-85-0

piperazine

1,3-diacetyl-1,3-dihydro-benzoimidazol-2-one
2735-73-1

1,3-diacetyl-1,3-dihydro-benzoimidazol-2-one

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 0.333333h;93%
piperazine
110-85-0

piperazine

acetyl chloride
75-36-5

acetyl chloride

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
With acetic acid at 60℃; for 0.0666667h; Sonication; Irradiation;90%
With water; sodium acetate
piperazine
110-85-0

piperazine

1,3-diacetyl-4,5-dimethylimidazolin-2(1H)-one
21265-71-4

1,3-diacetyl-4,5-dimethylimidazolin-2(1H)-one

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In dichloromethane at 20℃; for 2.5h;88%
piperazine
110-85-0

piperazine

1,3-diacetyl-2,3-dihydro-1H-imidazol-2-one
20212-13-9

1,3-diacetyl-2,3-dihydro-1H-imidazol-2-one

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In dichloromethane at 20℃; for 2.5h;85%
piperazine
110-85-0

piperazine

acetic anhydride
108-24-7

acetic anhydride

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
With pyridine; aluminum oxide at 77 - 80℃; for 0.5h; microwave irradiation;75%
In dichloromethane at 0℃; for 5h;20%
With acetic acid
N-Acetylimidazole
2466-76-4

N-Acetylimidazole

piperazine dihydrochloride
142-64-3

piperazine dihydrochloride

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

1,4-diacetylpiperazine
18940-57-3

1,4-diacetylpiperazine

Conditions
ConditionsYield
In ethanol; water at 20℃; for 6.16667h;A 70%
B n/a
piperazine
110-85-0

piperazine

Phenyl acetate
122-79-2

Phenyl acetate

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In water at 55℃; for 24h;69%
With acetonitrile
piperazine
110-85-0

piperazine

acetyl halide

acetyl halide

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
With sodium hydrogencarbonate In water at 55 - 60℃;35%
N,N-bis-cyanomethyl-acetamide
36460-47-6

N,N-bis-cyanomethyl-acetamide

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
With ethanol; nickel Hydrogenation;
piperazine
110-85-0

piperazine

S-phenyl thioacetate
934-87-2

S-phenyl thioacetate

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

thiophenol
108-98-5

thiophenol

Conditions
ConditionsYield
In water at 15 - 45℃; Rate constant; Thermodynamic data; Mechanism; ionic strength 0.2 M and 0.6 M (KCl), ΔH(excit.), ΔS(excit.), structure-reactivity correlations in the aminolysis;
piperazine
110-85-0

piperazine

1-acetylsulfanyl-4-nitro-benzene
15119-62-7

1-acetylsulfanyl-4-nitro-benzene

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

para-nitrobenzenethiol
1849-36-1

para-nitrobenzenethiol

Conditions
ConditionsYield
In water at 25℃; Rate constant; Mechanism; ionic strength 0.2 M (KCl), structure-reactivity correlations in the aminolysis;
piperazine
110-85-0

piperazine

2,4-dinitrophenyl acetate
4232-27-3

2,4-dinitrophenyl acetate

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

2,4-Dinitrophenol
51-28-5

2,4-Dinitrophenol

Conditions
ConditionsYield
In water at 25℃; Rate constant; Mechanism;
piperazinium
22044-09-3

piperazinium

S-phenyl thioacetate
934-87-2

S-phenyl thioacetate

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

thiophenol
108-98-5

thiophenol

Conditions
ConditionsYield
In water at 25℃; Rate constant; Mechanism; ionic strength 0.6 M and 0.8 M (KCl), pH 6.0; other pH, structure-reactivity correlations in the aminolysis;
piperazinium
22044-09-3

piperazinium

1-acetylsulfanyl-4-nitro-benzene
15119-62-7

1-acetylsulfanyl-4-nitro-benzene

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

para-nitrobenzenethiol
1849-36-1

para-nitrobenzenethiol

Conditions
ConditionsYield
In water at 25℃; Rate constant; Mechanism; ionic strength 0.2 M (KCl), structure-reactivity correlations in the aminolysis;
1-(4-benzylpiperazin-1-yl)ethan-1-one
208924-94-1

1-(4-benzylpiperazin-1-yl)ethan-1-one

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In methanol at 20℃;
piperazine
110-85-0

piperazine

4-nitrophenol acetate
830-03-5

4-nitrophenol acetate

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

4-nitro-phenol
100-02-7

4-nitro-phenol

Conditions
ConditionsYield
With sodium bis(2-ethylhexyl)-sulfosuccinate In 2,2,4-trimethylpentane at 25℃; Kinetics; Further Variations:; Solvents;
piperazine
110-85-0

piperazine

acetic acid
64-19-7

acetic acid

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

1,4-diacetylpiperazine
18940-57-3

1,4-diacetylpiperazine

Conditions
ConditionsYield
at 130℃; for 1h; microwave irradiation;A 57 % Chromat.
B 43 % Chromat.
at 200℃; for 1h; microwave irradiation;A 27 % Chromat.
B 73 % Chromat.
piperazine
110-85-0

piperazine

N-Acetylimidazole
2466-76-4

N-Acetylimidazole

piperazine dihydrochloride
142-64-3

piperazine dihydrochloride

A

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

B

1,4-diacetylpiperazine
18940-57-3

1,4-diacetylpiperazine

Conditions
ConditionsYield
Stage #1: piperazine; piperazine dihydrochloride In water for 0.0833333h;
Stage #2: N-Acetylimidazole With sodium chloride In water for 0.5h;
Stage #3: With sodium hydroxide In water chemoselective reaction;
piperazine
110-85-0

piperazine

picryl acetate
7614-96-2

picryl acetate

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In ethanol; water at 25℃; pH=5.07; Kinetics; Mechanism; Concentration; pH-value;
piperazine
110-85-0

piperazine

4-nitrophenol acetate
830-03-5

4-nitrophenol acetate

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In ethanol; water at 25℃; pH=9.56; Kinetics; Mechanism; Concentration; pH-value; Solvent;
piperazine
110-85-0

piperazine

2,4-dinitrophenyl acetate
4232-27-3

2,4-dinitrophenyl acetate

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

Conditions
ConditionsYield
In ethanol; water at 25℃; pH=6.2; Kinetics; Mechanism; Concentration; pH-value; Solvent; aq. phosphate buffer;
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

3-methyl-1H-pyrrole-2,4-dicarboxylic acid 4-pentafluorophenyl ester 4-(1,2,2-trimethyl-propyl) ester

3-methyl-1H-pyrrole-2,4-dicarboxylic acid 4-pentafluorophenyl ester 4-(1,2,2-trimethyl-propyl) ester

5-(4-acetyl-piperazine-1-carbonyl)-4-methyl-1H-pyrrole-3-carboxylic acid 1,2,2-trimethyl-propyl ester

5-(4-acetyl-piperazine-1-carbonyl)-4-methyl-1H-pyrrole-3-carboxylic acid 1,2,2-trimethyl-propyl ester

Conditions
ConditionsYield
With TEA In N,N-dimethyl-formamide at 23℃; for 24h;100%
3-[2-(pyridin-2-ylamino)-thiazol-5-ylsulfanyl]-benzoic acid
439579-07-4

3-[2-(pyridin-2-ylamino)-thiazol-5-ylsulfanyl]-benzoic acid

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

4-Acetyl-1-[3-[[2-[N-(2-pyridinyl)amino]thiazol-5-yl]thio]benzoyl]piperazine

4-Acetyl-1-[3-[[2-[N-(2-pyridinyl)amino]thiazol-5-yl]thio]benzoyl]piperazine

Conditions
ConditionsYield
With 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In tetrahydrofuran100%
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃;
6-(2-hydroxyethyl)-2-(methylthio)-4-pyrimidinyl 4-methyl-1-benzenesulfonate
920490-05-7

6-(2-hydroxyethyl)-2-(methylthio)-4-pyrimidinyl 4-methyl-1-benzenesulfonate

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

C13H20N4O2S

C13H20N4O2S

Conditions
ConditionsYield
In tetrahydrofuran at 70℃; for 48h;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

3-(Chloromethyl)benzoyl chloride
63024-77-1

3-(Chloromethyl)benzoyl chloride

4-Acetyl-1-(3-chloromethyl)benzoylpiperazine
439578-93-5

4-Acetyl-1-(3-chloromethyl)benzoylpiperazine

Conditions
ConditionsYield
In dichloromethane100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

C11H10N2O2S2
1046123-00-5

C11H10N2O2S2

1-{4-[5-(2-amino-thiazol-5-ylsulfanyl)-2-methyl-benzoyl]-piperazin-1-yl}-ethanone
903568-40-1

1-{4-[5-(2-amino-thiazol-5-ylsulfanyl)-2-methyl-benzoyl]-piperazin-1-yl}-ethanone

Conditions
ConditionsYield
With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

rac-cis-2,3-bis-(4-chloro-phenyl)-1-(2-fluoro-benzenesulfonyl)-2,3-dihydro-6-iodo-1H-imidazo[1,2-a]pyridin-5-one

rac-cis-2,3-bis-(4-chloro-phenyl)-1-(2-fluoro-benzenesulfonyl)-2,3-dihydro-6-iodo-1H-imidazo[1,2-a]pyridin-5-one

rac-cis-6-(4-Acetyl-piperazine-1-carbonyl)-2,3-bis-(4-chloro-phenyl)-1-(2-fluoro-benzenesulfonyl)-2,3-dihydro-1H-imidazo[1,2-a]pyridin-5-one

rac-cis-6-(4-Acetyl-piperazine-1-carbonyl)-2,3-bis-(4-chloro-phenyl)-1-(2-fluoro-benzenesulfonyl)-2,3-dihydro-1H-imidazo[1,2-a]pyridin-5-one

Conditions
ConditionsYield
100%
succinic acid anhydride
108-30-5

succinic acid anhydride

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

C10H16N2O4
389056-48-8

C10H16N2O4

Conditions
ConditionsYield
In benzene at 90℃;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

(S)-Propylene oxide
16088-62-3

(S)-Propylene oxide

(2S)-1-(4-acetylpiperazin-1-yl)propan-2-ol
1175819-89-2

(2S)-1-(4-acetylpiperazin-1-yl)propan-2-ol

Conditions
ConditionsYield
In methanol at 80℃; for 4h;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

1-{4-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-piperazin-1-yl}-ethanone
1082925-95-8

1-{4-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-piperazin-1-yl}-ethanone

Conditions
ConditionsYield
100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

2-(tert-butoxycarbonylamino)ethyl bromide
39684-80-5

2-(tert-butoxycarbonylamino)ethyl bromide

tert-butyl 2-(4-acetylpiperazin-1-yl)ethylcarbamate
1617536-29-4

tert-butyl 2-(4-acetylpiperazin-1-yl)ethylcarbamate

Conditions
ConditionsYield
With triethylamine In dichloromethane for 16h; Reflux;100%
With triethylamine In dichloromethane for 16h; Reflux;100%
With triethylamine In dichloromethane for 16h; Reflux;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

6-chloro-pyridine-2-carbonitrile
33252-29-8

6-chloro-pyridine-2-carbonitrile

6-(4-acetylpiperazin-1-yl)nicotinonitrile

6-(4-acetylpiperazin-1-yl)nicotinonitrile

Conditions
ConditionsYield
In acetonitrile at 150℃; for 1h; Microwave irradiation;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

1-(4-chlorophenyl)-1H-pyrazole-4-carbaldehyde
63874-99-7

1-(4-chlorophenyl)-1H-pyrazole-4-carbaldehyde

[1-(4-((1-(4-chlorophenyl)-1H-pyrazol-4-yl)methyl)piperazin-1-yl)ethanone]

[1-(4-((1-(4-chlorophenyl)-1H-pyrazol-4-yl)methyl)piperazin-1-yl)ethanone]

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen In methanol at 20℃; under 3102.97 Torr; for 6h;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

4-((5-(3,6-dihydro-2H-pyran-4-yl)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclohexanone

4-((5-(3,6-dihydro-2H-pyran-4-yl)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclohexanone

1-(4-(4-((5-(3,6-dihydro-2H-pyran-4-yl)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclohexyl)piperazin-1-yl)ethanone

1-(4-(4-((5-(3,6-dihydro-2H-pyran-4-yl)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclohexyl)piperazin-1-yl)ethanone

Conditions
ConditionsYield
With sodium tris(acetoxy)borohydride In dichloromethane at 15℃; for 18h;100%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

tert-butyl (2S)-2-[((2S)-2-{[(benzyloxy)carbonyl]amino}-4-methylpentanoyl)amino]-3-(4-hydroxyphenyl)propanoate
278597-79-8

tert-butyl (2S)-2-[((2S)-2-{[(benzyloxy)carbonyl]amino}-4-methylpentanoyl)amino]-3-(4-hydroxyphenyl)propanoate

bis(trichloromethyl) carbonate
32315-10-9

bis(trichloromethyl) carbonate

4-[(2S)-2-[((2S)-2-{[(benzyloxy)carbonyl]amino}-4-methylpentanoyl)amino]-3-(tert-butoxy)-3-oxopropyl]phenyl 4-acetyl-1-piperazine carboxylate

4-[(2S)-2-[((2S)-2-{[(benzyloxy)carbonyl]amino}-4-methylpentanoyl)amino]-3-(tert-butoxy)-3-oxopropyl]phenyl 4-acetyl-1-piperazine carboxylate

Conditions
ConditionsYield
Stage #1: tert-butyl (2S)-2-[((2S)-2-{[(benzyloxy)carbonyl]amino}-4-methylpentanoyl)amino]-3-(4-hydroxyphenyl)propanoate; bis(trichloromethyl) carbonate With N-ethyl-N,N-diisopropylamine In tetrahydrofuran; ethanol; dichloromethane at 20℃; for 4h;
Stage #2: N-acetylpiperidine With N-ethyl-N,N-diisopropylamine In tetrahydrofuran; dichloromethane for 18h;
99%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

3-(6-bromo-quinazolin-4-yl)-benzoic acid
1431542-28-7

3-(6-bromo-quinazolin-4-yl)-benzoic acid

1-{4-[3-(6-bromo-quinazolin-4-yl)-benzoyl]-piperazine-1-yl}-ethanone
1431542-27-6

1-{4-[3-(6-bromo-quinazolin-4-yl)-benzoyl]-piperazine-1-yl}-ethanone

Conditions
ConditionsYield
Stage #1: 3-(6-bromo-quinazolin-4-yl)-benzoic acid With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 0.166667h;
Stage #2: N-acetylpiperidine In dichloromethane at 20℃; for 2h;
99%
With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; triethylamine In ethyl acetate at 20℃;90%
Stage #1: 3-(6-bromo-quinazolin-4-yl)-benzoic acid With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 0.166667h;
Stage #2: N-acetylpiperidine In dichloromethane at 20℃; for 2h;
3.03 mg
Stage #1: 3-(6-bromo-quinazolin-4-yl)-benzoic acid With 5-bromo-2-ethoxy-3-trifluoromethyl-pyridine; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate In dichloromethane at 20℃; for 0.166667h;
Stage #2: N-acetylpiperidine In dichloromethane at 20℃; for 2h;
Stage #1: 3-(6-bromo-quinazolin-4-yl)-benzoic acid With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 0.166667h;
Stage #2: N-acetylpiperidine In dichloromethane at 20℃; for 2h;
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

ortho-nitrofluorobenzene
1493-27-2

ortho-nitrofluorobenzene

1-(4-(2-nitrophenyl)piperazin-1-yl)ethanone
100138-76-9

1-(4-(2-nitrophenyl)piperazin-1-yl)ethanone

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 50℃; for 17h;99%
With potassium carbonate In N,N-dimethyl-formamide at 25 - 50℃; for 17h;99%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

carbon dioxide
124-38-9

carbon dioxide

1-acetyl-4-formylpiperazine

1-acetyl-4-formylpiperazine

Conditions
ConditionsYield
With C32H36ClNO2P2Ru; hydrogen In tetrahydrofuran at 120℃; under 30402 Torr; for 20h; Autoclave; Green chemistry;99%
With Au-TiO2; hydrogen In N,N-dimethyl acetamide at 140℃; for 5h;98%
With dmap; hydrogen; copper diacetate In tetrahydrofuran at 90℃; under 60804.1 Torr; for 12h; Sealed tube; chemoselective reaction;80 %Chromat.
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

ethyl 7-chloro-1-ethyl-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate
56654-05-8

ethyl 7-chloro-1-ethyl-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate

ethyl 7-(4-acetyl-1-piperazinyl)-1-ethyl-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate
54132-41-1

ethyl 7-(4-acetyl-1-piperazinyl)-1-ethyl-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate

Conditions
ConditionsYield
In ethanol for 3h; Heating;98.1%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

(5S)-5-(tert-butyldiphenylsiloxymethyl)-2(5H)-furanone
99315-76-1

(5S)-5-(tert-butyldiphenylsiloxymethyl)-2(5H)-furanone

N-acetyl-N'-(5-tert-butyldiphenylsiloxy-4-oxopentanoyl)piperazine

N-acetyl-N'-(5-tert-butyldiphenylsiloxy-4-oxopentanoyl)piperazine

Conditions
ConditionsYield
In tetrahydrofuran for 24h; Ambient temperature;98%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

ethyl acetoacetate
141-97-9

ethyl acetoacetate

malononitrile
109-77-3

malononitrile

6-amino-2,4-dihydro-3,4-dimethyl-4-(piperazin-1-yl)pyrano[2,3-c]pyrazole-5-carbonitrile
1235990-65-4

6-amino-2,4-dihydro-3,4-dimethyl-4-(piperazin-1-yl)pyrano[2,3-c]pyrazole-5-carbonitrile

Conditions
ConditionsYield
With hydrazine hydrate; heptakis(6-amino-6-deoxy)-β-cyclodextrin at 20℃; for 0.0166667h; Neat (no solvent);98%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

methyl 4-(((3R,5S)-4-(3-formylbenzyl)-3,5-dimethylpiperazin-1-yl)methyl)benzoate

methyl 4-(((3R,5S)-4-(3-formylbenzyl)-3,5-dimethylpiperazin-1-yl)methyl)benzoate

methyl 4-(((3R,5S)-4-(3-((4-acetylpiperazin-1-yl)methyl)benzyl)-3,5-dimethylpiperazin-1-yl)methyl)benzoate

methyl 4-(((3R,5S)-4-(3-((4-acetylpiperazin-1-yl)methyl)benzyl)-3,5-dimethylpiperazin-1-yl)methyl)benzoate

Conditions
ConditionsYield
Stage #1: N-acetylpiperidine; methyl 4-(((3R,5S)-4-(3-formylbenzyl)-3,5-dimethylpiperazin-1-yl)methyl)benzoate In dichloromethane at 20℃; for 1h;
Stage #2: With sodium tris(acetoxy)borohydride In dichloromethane at 20℃; for 17h;
97.7%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

3-chloro-4-fluoronitrobenzene
350-30-1

3-chloro-4-fluoronitrobenzene

1-acetyl-4-(2-chloro-4-nitrophenyl)piperazine
101970-40-5

1-acetyl-4-(2-chloro-4-nitrophenyl)piperazine

Conditions
ConditionsYield
at 55℃; for 1h;97%
With pyridine at 60℃; for 2h; Substitution; condensation;53%
With potassium carbonate In dimethyl sulfoxide at 90℃; for 4h;
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

N-[4-(2-bromo-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-methoxy-benzamide
887938-27-4

N-[4-(2-bromo-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-methoxy-benzamide

N-{4-[2-(4-acetylpiperazin-1-yl)ethoxy]-3-(1-methyl-1H-pyrazol-5-yl)phenyl}-3-methoxybenzamide

N-{4-[2-(4-acetylpiperazin-1-yl)ethoxy]-3-(1-methyl-1H-pyrazol-5-yl)phenyl}-3-methoxybenzamide

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 120℃; for 0.333333h; Microwave irradiation;97%
With potassium carbonate In N,N-dimethyl-formamide at 120℃; for 0.333333h; Microwave irradiation;
benzoxazole
273-53-0

benzoxazole

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

1-(4-(benzo[d]oxazol-2-yl)piperazin-1-yl)ethan-1-one
695202-29-0

1-(4-(benzo[d]oxazol-2-yl)piperazin-1-yl)ethan-1-one

Conditions
ConditionsYield
With tert.-butylhydroperoxide; 1-(n-butyl)pyridinium iodide; acetic acid In water; acetonitrile at 20℃; for 3.5h; Green chemistry;97%
Stage #1: benzoxazole; N-acetylpiperidine With N-iodo-succinimide; dihydrogen peroxide; acetic acid In water; acetonitrile at 20℃; for 6h;
Stage #2: With sodium carbonate In water; ethyl acetate; acetonitrile Saturated solution;
90%
With dihydrogen peroxide; tetra-(n-butyl)ammonium iodide; acetic acid In water; acetonitrile at 20℃; for 3h;83%
With copper acetylacetonate; oxygen In 5,5-dimethyl-1,3-cyclohexadiene at 140℃; for 14h;82%
Multi-step reaction with 2 steps
1: neat (no solvent) / 1 h / 60 °C
2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane / 0.5 h / 25 °C
View Scheme
methanol
67-56-1

methanol

N-acetylpiperidine
13889-98-0

N-acetylpiperidine

4-acetyl-1-methylpiperazine hydrochloride

4-acetyl-1-methylpiperazine hydrochloride

Conditions
ConditionsYield
Stage #1: methanol; N-acetylpiperidine With Ag/TiO2 at 25℃; under 760.051 Torr; for 10h; UV-irradiation;
Stage #2: With hydrogenchloride In diethyl ether at 25℃; for 12h;
97%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

3-(Dimethylaminomethyl)indole
87-52-5

3-(Dimethylaminomethyl)indole

3-[(4-acetylpiperazin-1-yl)methyl]-1H-indole
1329045-35-3

3-[(4-acetylpiperazin-1-yl)methyl]-1H-indole

Conditions
ConditionsYield
In toluene Reflux;97%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

C20H20ClFN2O

C20H20ClFN2O

C26H31FN4O2

C26H31FN4O2

Conditions
ConditionsYield
In 1-methyl-pyrrolidin-2-one at 100℃; for 2h;97%
N-acetylpiperidine
13889-98-0

N-acetylpiperidine

N-(5-((dibenzylamino)methyl)-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-2-yl)octanamide
88523-20-0

N-(5-((dibenzylamino)methyl)-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-2-yl)octanamide

N-(5-((4-acetylpiperazin-1-yl)methyl)-4-oxo-4,7-dihydro-3Hpyrrolo[2,3-d]pyrimidin-2-yl)octanamide

N-(5-((4-acetylpiperazin-1-yl)methyl)-4-oxo-4,7-dihydro-3Hpyrrolo[2,3-d]pyrimidin-2-yl)octanamide

Conditions
ConditionsYield
In tetrahydrofuran; methanol at 75℃; for 24h; Sealed tube;97%

13889-98-0Relevant articles and documents

Phenyl esters, preferred reagents for mono-acylation of polyamines in the presence of water

Pappas, Kyrie,Zhang, Xiang,Tang, Wei,Fang, Shiyue

, p. 5741 - 5743 (2009)

In the presence of water, several diamines and one triamine were mono-acylated at ambient to moderate temperatures using phenyl esters and a phenyl carbonate as acylation agents in good to excellent isolated yields. Both linear and cyclic polyamines were suitable substrates, and the acylating agents can be aryl and alkyl carboxylic acid esters.

-

Hall

, p. 2570 (1956)

-

EDARAVONE PRODRUG COMPOUND AND PHARMACEUTICAL USE THEREOF IN TREATMENT OR ALLEVIATION OF NEURODEGENERATIVE OR MOTOR NEURON DISEASE

-

Paragraph 0073-0074; 0077-0078, (2022/02/11)

The present invention provides a novel prodrug of an edaravone compound or a pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising same as an active ingredient, and a use thereof in treatment or alleviation of neurodegenerative and/or motor neuron disease.

Discovery of Novel Apigenin-Piperazine Hybrids as Potent and Selective Poly (ADP-Ribose) Polymerase-1 (PARP-1) Inhibitors for the Treatment of Cancer

Long, Huan,Hu, Xiaolong,Wang, Baolin,Wang, Quan,Wang, Rong,Liu, Shumeng,Xiong, Fei,Jiang, Zhenzhou,Zhang, Xiao-Qi,Ye, Wen-Cai,Wang, Hao

, p. 12089 - 12108 (2021/09/06)

Poly (ADP-ribose) polymerase-1 (PARP-1) is a potential target for the discovery of chemosensitizers and anticancer drugs. Amentoflavone (AMF) is reported to be a selective PARP-1 inhibitor. Here, structural modifications and trimming of AMF have led to a series of AMF derivatives (9a-h) and apigenin-piperazine/piperidine hybrids (14a-p, 15a-p, 17a-h, and 19a-f), respectively. Among these compounds, 15l exhibited a potent PARP-1 inhibitory effect (IC50 = 14.7 nM) and possessed high selectivity to PARP-1 over PARP-2 (61.2-fold). Molecular dynamics simulation and the cellular thermal shift assay revealed that 15l directly bound to the PARP-1 structure. In in vitro and in vivo studies, 15l showed a potent chemotherapy sensitizing effect against A549 cells and a selective cytotoxic effect toward SK-OV-3 cells through PARP-1 inhibition. 15l·2HCl also displayed good ADME characteristics, pharmacokinetic parameters, and a desirable safety margin. These findings demonstrated that 15l·2HCl may serve as a lead compound for chemosensitizers and the (BRCA-1)-deficient cancer therapy.

HETERO-HALO INHIBITORS OF HISTONE DEACETYLASE

-

Paragraph 476, (2017/01/26)

This invention provides compounds that are inhibitors of HDAC2. The compounds (e.g., compounds according to Formula I, II or any of Compounds 100-128 or any of those in Tables 2 or 3) accordingly are useful for treating, alleviating, or preventing a condition in a subject such as a neurological disorder, memory or cognitive function disorder or impairment, extinction learning disorder, fungal disease or infection, inflammatory disease, hematological disease, or neoplastic disease, or for improving memory or treating, alleviating, or preventing memory loss or impairment.

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