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 |
The N-Ethyl-2,3-dioxopiperazine is an organic compound with the formula C6H10N2O2. The IUPAC name of this chemical is 1-ethylpiperazine-2,3-dione. With the CAS registry number 59702-31-7, it is also named as 2,3-Piperazinedione, 1-ethyl-. The product's categories are Piperaizine; Heterocyclic Compounds; Building Blocks; Heterocyclic Building Blocks; Piperazines. Besides, it should be stored in a closed cool and dry place. It is used as the organic synthesis intermediate, and it is used in producing pai pulls medicines xilin, spore pai alkone and so on.
Physical properties about N-Ethyl-2,3-dioxopiperazine are: (1)ACD/LogP: -1.56; (2)ACD/LogD (pH 5.5): -1.56; (3)ACD/LogD (pH 7.4): -1.56; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 3.39; (7)ACD/KOC (pH 7.4): 3.39; (8)#H bond acceptors: 4; (9)#H bond donors: 1; (10)#Freely Rotating Bonds: 1; (11)Polar Surface Area: 40.62 Å2; (12)Index of Refraction: 1.475; (13)Molar Refractivity: 34.94 cm3; (14)Molar Volume: 124.1 cm3; (15)Polarizability: 13.85×10-24cm3; (16)Surface Tension: 36.7 dyne/cm; (17)Density: 1.145 g/cm3.
Preparation: this chemical can be prepared by 4-ethyl-2,3-dioxo-πperazine-1-carbonyl chloride and 6-[2-amino-2-(2-amino-thiazol-4-yl)-acetylamino]-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid. This reaction will need reagent aq.sodium hydrogen carbonate. The reaction temperature is 0 °C.
When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. When you are using it, wear suitable protective clothing. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
You can still convert the following datas into molecular structure:
(1)SMILES: O=C1C(=O)N(CC)CCN1
(2)InChI: InChI=1/C6H10N2O2/c1-2-8-4-3-7-5(9)6(8)10/h2-4H2,1H3,(H,7,9)
(3)InChIKey: ZBEKOEYCWKIMGU-UHFFFAOYAD
(4)Std. InChI: InChI=1S/C6H10N2O2/c1-2-8-4-3-7-5(9)6(8)10/h2-4H2,1H3,(H,7,9)
(5)Std. InChIKey: ZBEKOEYCWKIMGU-UHFFFAOYSA-N
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LD50 | intravenous | 4830mg/kg (4830mg/kg) | Yakugaku Zasshi. Journal of Pharmacy. Vol. 97, Pg. 987, 1977. |
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