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inquiryProduct Description Product name N-Ethyl-2,3-dioxopiperazine CAS 59702-31-7 Assay 99% Appearance Yellow
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inquiryChemical Name: 4-Ethyl-2,3-dioxo-piperazine Synonyms: N-Ethyl-2,3-dioxopiperazine CAS No.: 59702-31-7 Molecular Formula: C6H10N2O2 Properties: white to pale yellow crystalline powder Application: The important intermediate of Pipera
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Product name: 4-Ethyl-2,3-Dioxo-Piperazine CAS No.:59702-31-7 Molecule Formula:C6H10N2O2 Molecule Weight:142.16 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise Standard
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N-ethylethane-1,2-diamine
oxalic acid diethyl ester
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With acetic acid In methanol at 15 - 50℃; for 1h; Reagent/catalyst; | 83.21% |
6-<(+/-)-α-amino-α-(2-aminothiazol-4-yl)acetamido>penicillanic acid
4-ethyl-2,3-dioxopiperazine-1-carbonyl chloride
A
6-<(+/-)-α-(2-aminothiazol-4-yl)-α-(4-ethyl-2,3-dioxopiperazin-1-ylcarbonylamino)acetamido>penicillanic acid
B
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With sodium hydrogencarbonate 1.) THF, H2O, 0 deg C, 2.) pH=7-7.5, room temperature, 1 h; | A 21% B n/a |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With potassium hydroxide In formaldehyd | A 100% B n/a |
bis(trichloromethyl) carbonate
1-ethyl-2,3-dioxo-piperazine
4-ethyl-2,3-dioxopiperazine-1-carbonyl chloride
Conditions | Yield |
---|---|
With pyridine; dmap; chloro-trimethyl-silane In dichloromethane at -25 - -20℃; | 94.3% |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 10 - 20℃; for 1.06667h; Temperature; Reagent/catalyst; Green chemistry; | 93.9% |
Stage #1: 1-ethyl-2,3-dioxo-piperazine With chloro-trimethyl-silane; triethylamine In dichloromethane at 0 - 20℃; for 1h; Inert atmosphere; Schlenk technique; Stage #2: bis(trichloromethyl) carbonate In dichloromethane at -30℃; Inert atmosphere; Schlenk technique; |
bis(trichloromethyl) carbonate
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Stage #1: 1-ethyl-2,3-dioxo-piperazine With chloro-trimethyl-silane; triethylamine In dichloromethane at 20℃; for 1h; Cooling with ice; Stage #2: bis(trichloromethyl) carbonate In dichloromethane at -30℃; for 1h; Stage #3: C13H17NO4 With chloro-trimethyl-silane; triethylamine In dichloromethane at -40℃; for 1.5h; Cooling with ice; | 86% |
bis(trichloromethyl) carbonate
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Stage #1: 1-ethyl-2,3-dioxo-piperazine With chloro-trimethyl-silane; triethylamine In dichloromethane at 20℃; for 1h; Cooling with ice; Stage #2: bis(trichloromethyl) carbonate In dichloromethane at -30℃; for 1h; Stage #3: C10H15N3O4S With chloro-trimethyl-silane; triethylamine In dichloromethane at -40 - 20℃; for 2.5h; Cooling with ice; | 86% |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Stage #1: 5-(benzyloxy)-2-(4-(benzyloxy)phenyl)-1-(4-bromobutyl)-3-methyl-1H-indole; 1-ethyl-2,3-dioxo-piperazine With triethylamine In butan-1-ol for 4h; Reflux; Stage #2: With palladium 10% on activated carbon In ethyl acetate; ethanethiol; butan-1-ol at 45℃; for 24h; | 49.1% |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With caesium carbonate; potassium iodide In acetonitrile at 80℃; | 31.1% |
chloro-trimethyl-silane
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With triethylamine In chloroform for 1h; Heating; | |
With triethylamine In dichloromethane at -10 - 0℃; for 0.2h; Solvent; Reagent/catalyst; |
ethyl (4-benzothiazol-2-ylbenzyl)phosphonochloridate hydrochloride
1-ethyl-2,3-dioxo-piperazine
(4-Benzothiazol-2-yl-benzyl)-(4-ethyl-2,3-dioxo-piperazin-1-yl)-phosphinic acid ethyl ester
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
tert-butyl 3-bromopropionate
1-ethyl-2,3-dioxo-piperazine
3-(4-ethyl-2,3-dioxo-piperazin-1-yl)propionic acid tert-butyl ester
Conditions | Yield |
---|---|
With polystyrene-bound 2-tert-butylimino-2-diethylamino-1,3-dimethyl-perhydro-1,3,2-diazaphosphorine In acetonitrile at 22℃; for 16h; Polystyrene; |
[2-(4-(bromomethyl)phenyl)ethyl]carbamic acid tert-butyl ester
1-ethyl-2,3-dioxo-piperazine
1-[4-(2-aminoethyl)benzyl]-4-ethylpiperazine-2,3-dione hydrochloride
Conditions | Yield |
---|---|
Stage #1: [2-(4-(bromomethyl)phenyl)ethyl]carbamic acid tert-butyl ester; 1-ethyl-2,3-dioxo-piperazine With sodium hydride In N,N-dimethyl-formamide at 1 - 30℃; for 1h; Stage #2: With potassium hydrogensulfate; water; sodium hydrogencarbonate In ethyl acetate; N,N-dimethyl-formamide Stage #3: With hydrogenchloride In ethyl acetate at 1 - 30℃; for 1h; |
5-chloro-N-((1-(4-iodophenyl)-1H-imidazol-4-yl)methyl)thiophene-2-carboxamide
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With potassium carbonate; N,N`-dimethylethylenediamine; copper(l) iodide In 1,4-dioxane; dimethyl sulfoxide at 110℃; |
bromoacetic acid tert-butyl ester
1-ethyl-2,3-dioxo-piperazine
(4-ethyl-2, 3-dioxo-piperazin-1-yl)-acetic acid
Conditions | Yield |
---|---|
With potassium carbonate In tert-butyl alcohol |
phosgene
1-ethyl-2,3-dioxo-piperazine
4-ethyl-2,3-dioxopiperazine-1-carbonyl chloride
Conditions | Yield |
---|---|
With chloro-trimethyl-silane; triethylamine In tetrahydrofuran; 1,4-dioxane |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
With 1H-imidazole; sodium In 1,2-dimethoxyethane for 10h; Solvent; Reagent/catalyst; Reflux; Industrial scale; |
1-ethyl-2,3-dioxo-piperazine
(4-ethyl-2, 3-dioxo-piperazin-1-yl)-acetic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 20 °C / Inert atmosphere 1.2: 3 h / 20 °C / Inert atmosphere 2.1: trifluoroacetic acid / dichloromethane / 1.5 h / 20 °C View Scheme |
bromoacetic acid tert-butyl ester
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Stage #1: 1-ethyl-2,3-dioxo-piperazine With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 0.5h; Inert atmosphere; Stage #2: bromoacetic acid tert-butyl ester In N,N-dimethyl-formamide; mineral oil at 20℃; for 3h; Inert atmosphere; | 940 mg |
1-ethyl-2,3-dioxo-piperazine
piperacillin
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: dichloromethane / 0.5 h / 5 °C 2.1: 0.1 h / 8 °C / 1500.15 Torr / Inert atmosphere 3.1: dichloromethane 3.2: 0.67 h / 3 °C 4.1: water / 0.67 h / 6 - 9 °C / Large scale View Scheme |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: dichloromethane / 0.5 h / 5 °C 2.1: 0.1 h / 8 °C / 1500.15 Torr / Inert atmosphere 3.1: dichloromethane 3.2: 0.67 h / 3 °C View Scheme |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: dichloromethane / 0.5 h / 5 °C 2: 0.1 h / 8 °C / 1500.15 Torr / Inert atmosphere View Scheme |
Conditions | Yield |
---|---|
In dichloromethane at 5℃; for 0.5h; |
2-tert-butoxycarbonylamino-succinic acid 1-benzyl ester
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Stage #1: 2-tert-butoxycarbonylamino-succinic acid 1-benzyl ester With triethylamine; HATU In dichloromethane at 20℃; for 0.5h; Stage #2: 1-ethyl-2,3-dioxo-piperazine In dichloromethane at 20℃; for 1h; | 5.64 g |
2-tert-butoxycarbonylamino-succinic acid 1-benzyl ester
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: HATU; triethylamine / dichloromethane / 0.5 h / 20 °C 1.2: 1 h / 20 °C 2.1: hydrogen; palladium 10% on activated carbon / ethyl acetate / 18 h / 20 °C View Scheme |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 1 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 1.2: -30 °C / Inert atmosphere; Schlenk technique 2.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 2.2: 1.5 h / -40 - 0 °C / Inert atmosphere; Schlenk technique View Scheme |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 1 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 1.2: -30 °C / Inert atmosphere; Schlenk technique 2.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 2.2: 1.5 h / -40 - 0 °C / Inert atmosphere; Schlenk technique 3.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 0.08 h / 0 °C / Inert atmosphere; Schlenk technique 3.2: 3 h / 0 - 20 °C / Inert atmosphere; Schlenk technique View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 1 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 1.2: -30 °C / Inert atmosphere; Schlenk technique 2.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 2.2: 1.5 h / -40 - 0 °C / Inert atmosphere; Schlenk technique 3.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 0.08 h / 0 °C / Inert atmosphere; Schlenk technique 3.2: 3 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 4.1: acetonitrile / 2 h / 20 °C / Inert atmosphere; Schlenk technique View Scheme |
1-ethyl-2,3-dioxo-piperazine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 1 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 1.2: -30 °C / Inert atmosphere; Schlenk technique 2.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 2.2: 1.5 h / -40 - 0 °C / Inert atmosphere; Schlenk technique 3.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 0.08 h / 0 °C / Inert atmosphere; Schlenk technique 3.2: 3 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 4.1: palladium on activated carbon; hydrogen / tetrahydrofuran; water / 1 h / 20 °C / 760.05 Torr / Schlenk technique View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 1 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 1.2: -30 °C / Inert atmosphere; Schlenk technique 2.1: triethylamine; chloro-trimethyl-silane / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 2.2: 1.5 h / -40 - 0 °C / Inert atmosphere; Schlenk technique 3.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 0.08 h / 0 °C / Inert atmosphere; Schlenk technique 3.2: 3 h / 0 - 20 °C / Inert atmosphere; Schlenk technique 4.1: acetonitrile / 2 h / 20 °C / Inert atmosphere; Schlenk technique 5.1: palladium on activated carbon; hydrogen / tetrahydrofuran; water / 1 h / 20 °C / 760.05 Torr / Schlenk technique View Scheme |
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