カルバジン酸エチル
カルバジン酸エチル · アミノカルバミド酸エチル · ヒドラジンカルボン酸エチル · ヒドラジン-1-カルボン酸エチル · エトキシカルボニルヒドラジン · ヒドラジノぎ酸エチル · N-アミノカルバミド酸エチル · ETHYL HYDRAZINECARBOXYLATE

識別子と物理属性
| CAS No. | 4114-31-2 |
|---|---|
| 分子式 | C3H8N2O2 |
| 平均分子量 | 104.11 g/mol |
| 単同位体質量 | 104.0585775 g/mol |
| SMILES | CCOC(=O)NN |
| InChIKey | VYSYZMNJHYOXGN-UHFFFAOYSA-N |
| PubChem CID | 20064 |
| EC No. | 223-903-3 |
| DTXSID | DTXSID1063308 |
| 現地名 | カルバジン酸エチル |
化学・物理的性質
| XLogP | -0.4 |
|---|---|
| 極性表面積 | 64.4 |
| 水素結合供与体数 | 2 |
| 水素結合受容体数 | 3 |
| 回転可能結合数 | 2 |
| 重原子数 | 7 |
| 形式電荷 | 0 |
| 複雑度 | 64 |
| 融点 | 44-47 °C (lit.) |
| 沸点 | 108-110 °C/22 mmHg (lit.) |
| 密度 | 1.2719 (rough estimate) |
| 屈折率 | 1.4715 (estimate) |
| 引火点 | 187 °F |
| 貯蔵条件 | Keep in dark place,Inert atmosphere,Store in freezer, under -20°C |
| pKa(酸解離定数) | 10.72±0.20(Predicted) |
| 外観・状態 | 粉 |
| 色 | ホワイト~クリーム |
| 溶解度 | 水に非常に溶けやすい。 |
| 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 データベース | 4114-31-2(CAS DataBase Reference) |
| NISTの化学物質情報 | Hydrazinecarboxylic acid, ethyl ester(4114-31-2) |
| EPAの化学物質情報 | Hydrazinecarboxylic acid, ethyl ester (4114-31-2) |
化学的特性
Off-white crystals.
安全性と法規制
| GHS 分類 | DangerH300 (10.4%): Fatal if swallowed [Danger Acute toxicity, oral]P261, P264, P264+P265, P270, P271, P280, P301+P316, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 48 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Hazard Classes and Categories | Acute Tox. 3 (87.5%) |
| 水環境危害等級(WGK) | 3 |
| TSCA 収載状態 | TSCA listed |
| RTECS 番号 | FE2545000 |
| 輸送番号(UN) | 2811 |
| 税関コード | 29280090 |
| 危険文句(R) | 36/37/38-25 |
| 消防法 | 危-5-II |
| 危険表示 | Xi,T |
| 安全措置(S) | 26-36-45 |
| 危険等級 | 6.1Eye Irrit. 2Skin Irrit. 2STOT SE 3 |
| 包装等級 | III |
| 貯蔵分類 | 11 - Combustible Solids |
用途
使用
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.
製法・合成法
純化方法
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].