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Diethylenetriamine → 2-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazole
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Diethylenetriamine | HCID 8111 | — |
| 反応物 | 2,4-Bis(1,1-dimethylethyl)-6-[2-(2-nitrophenyl)diazenyl]phenol | HCID 104110 | — |
| 溶媒 | O-Xylene | HCID 7237 | — |
| 生成物 | 2-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazole | HCID 77455 | 90% |
反応手順
Example 1 is repeated, except that an equivalent amount of 2-nitro-2'-hydroxy-3', 5'-di-tert.-butylazobenzene (91% pure) is used instead of 2-nitro-2'-hydroxy-5'-methylazobenzene and a mixture of 40 g of xylene and 60 g of diethylenetriamine instead of 80 g of xylene and 20 g of diethylenetriamine. The hydrogenation is carried out at 50° C. After work up of the hydrogenation solution, the product is crystallized from a mixture of 40 g of xylene and 160 g of methanol. The product (title compound) is isolated in a yield of 90% of theory. Melting point: 152°-154° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05276161 |
| 出典データセット | uspto-grants-1994_01 |
| ORD ID | ord-023e4e77b12242cca474cc7c639b7fb3 |
| 出典メモ | uspto-grants-1994_01 |