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Squaric acid → HCID 178426473、化合物
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Squaric acid | HCID 17913 | — |
| 反応物 | Ethanol, 2-[(2,2,6,6-tetramethyl-4-piperidinyl)amino]- | HCID 10703227 | — |
| 溶媒 | Acetone | HCID 180 | — |
| 生成物 | HCID 178426473 | HCID 178426473 | 66.8% |
反応手順
5.7 g of quadratic acid (0.05 mole) and 50.1 g of 97.7% strength 4-(2-hydroxyethyl)amino-2,2,6,6-tetramethylpiperidine (0.244 mole) were heated for five hours to 200° C. After cooling, the reaction product was boiled with 150 cc of acetone and, after another cooling step, vacuum-filtered and washed with acetone, thus obtaining 16.0 g. Yield: 66.8% of theory, mp 309°-311° C. Extinction (g/l.cm) at 336 nm: 97.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04537924 |
| 出典データセット | uspto-grants-1985_08 |
| ORD ID | ord-dcc3b2938fb3417fae0dc4739194ccc1 |
| 出典メモ | uspto-grants-1985_08 |