Ethyl carbazate
|
|
Ethyl carbazate ??
- ???
- 44-47 °C (lit.)
- ?? ?
- 108-110 °C/22 mmHg (lit.)
- ??
- 1.2719 (rough estimate)
- ???
- 1.4715 (estimate)
- ???
- 187 °F
- ?? ??
- Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
- ?? ?? (pKa)
- 10.72±0.20(Predicted)
- ??? ??
- ??
- ??
- ???? ?????
- ???
- ?? ?? ? ????.
- ??
- Moisture Sensitive
- BRN
- 878265
- InChI
- 1S/C3H8N2O2/c1-2-7-3(6)5-4/h2,4H2,1H3,(H,5,6)
- InChIKey
- VYSYZMNJHYOXGN-UHFFFAOYSA-N
- SMILES
- CCOC(=O)NN
- CAS ??????
- 4114-31-2(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xi,T | ||
|---|---|---|---|
| ?? ???? ?? | 36/37/38-25 | ||
| ????? | 26-36-45 | ||
| ????(UN No.) | 2811 | ||
| WGK ?? | 3 | ||
| RTECS ?? | FE2545000 | ||
| TSCA | TSCA listed | ||
| ?? ?? | 6.1 | ||
| ???? | III | ||
| HS ?? | 29280090 | ||
| ???? ??? | 11 - Combustible Solids | ||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
Ethyl carbazate C??? ??, ??, ??
??? ??
Off-white crystals.??
Prepare 4-phenylurazole from ethyl carbazate and then oxidize the urazole with gaseous dinitrogen tetroxide to yield 4-phenyl-1,2,4-tri- azoline-3,5-dione la. Modification of the ethyl carbazate procedure in which analytically pure monoalkylhydrazine hydrochlorides were isolated in greater than 90% yield, starting from a ketone or aldehyde. Treatment of primary amines is with chloroamine or hydroxylamine-0-sulfonic acid and the condensation of a carbonyl compound with ethyl carbazate. The FeCl 3 -catalyzed reaction of ethyl carbazate (2 b) proceeded readily to give β-hydroxyester 3 b in better yield. A new one-pot neat synthesis of some 5-aryl-2,4-dihydro-3H-1,2,4-triazol-3-ones through cyclocondensation of ethyl carbazate with aryl nitriles catalyzed by DMAP as an efficient and basic nucleophilic catalyst is described.???
Irritant.Purification Methods
Fractionate the carbazate using a Vigreux column (p 11) until the distillate crystallises [Allen & Bell Org Synth Coll Vol III 404 1955, Beilstein 3 IV 174].Ethyl carbazate ?? ?? ? ???
???
?? ??
4-[4-(?????)??]-1,2,3-?????
4-??-1,2,3-?????-5-??????
1,2,3-?????-4-?????
4-(1,2,3-?????-4-?)??
Cadralazine
4-(1,2,3-?????-4-?)???
4-(4-?????)-1,2,3-?????
4-(1,2,3-THIADIAZOL-4-YL)ANILINE
4-(4-?????)-1,2,3-?????
4-(1,2,3-?????-4-?)??????
4-??-1,2,3-?????-5-??
4-(4-????)-1,2,3-?????
?????
1,2,3-Thiadiazole-4-carbonyl chloride (6CI,7CI,8CI,9CI)
4-(4-CHLOROPHENYL)-1,2,3-THIADIAZOLE
4-(1,2,3-THIADIAZOL-4-YL)????????
??1,2,3-?????-4-???????
4-(1,2,3-THIADIAZOL-4-YL)?????
4-[4-(????????)??]-1,2,3-?????-5-??
4-(4-?????)-1,2,3-?????-5-??
4-(1,2,3-THIADIAZOL-4-YL)???????
??4-??-1,2,3-?????-5-???????
4-ISOPROPYL-1,2,3-THIADIAZOLE-5-CARBOXYLIC ACID
4-(4-?????)-1,2,3-?????-5-??
4-??-1,2,3-?????-5-??????
ETHYL 4-ISOPROPYL-1,2,3-THIADIAZOLE-5-CARBOXYLATE
4-(4-?????)-1,2,3-?????
5-???-4-??-1,2,3-?????
(1,2,3-THIADIAZOL-4-YL)METHANOL
4-Methyl-1,2,3-thiadiazole-5-carboxylic acid
Ethyl carbazate ?? ??
???( 303)?? ??
| ??? | ?? | ??? | ?? | ?? ? | ?? |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +86-15350571055 |
Sibel@chuanghaibio.com | China | 8738 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 |
sales1@chuanghaibio.com | China | 5220 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21585 | 55 |
| Tianjin Zhongxin Chemtech Co., Ltd. | 86-22-66880623 +8618622897568 |
sales@tjzxchem.com | China | 572 | 58 |
| Alchem Pharmtech,Inc. | 8485655694 |
sales@alchempharmtech.com | United States | 63687 | 58 |
| CONIER CHEM AND PHARMA LIMITED | |
sales@conier.com | China | 49979 | 58 |
| career henan chemical co | +86-0371-86658258 |
factory@coreychem.com | China | 29792 | 58 |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 |
sale@simagchem.com | China | 17346 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 |
sales@tnjchem.com | China | 34563 | 58 |
| Wuhan Fortuna Chemical Co., Ltd | +86-27-59207850 |
info@fortunachem.com | China | 5997 | 58 |