참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|
| 반응물 | Azobenzene | HCID 2272 | — |
| 반응물 | Fluorenone | HCID 10241 | — |
| 반응물 | Sodium Hydroxide | HCID 14798 | — |
| 반응물 | 2,4-Bis(1,1-dimethylethyl)-6-[2-(2-nitrophenyl)diazenyl]phenol | HCID 104110 | — |
| 용매 | 1-Octanol | HCID 957 | — |
| 용매 | Water | HCID 962 | — |
| 생성물 | 2,4-Di-tert-butyl-6-(1-oxo-2H-1lambda~5~,2,3-benzotriazol-2-yl)phenol | HCID 341386 | — |
반응 단계
2-nitro-2'-hydroxy-3',5'-di-t-butylazobenzene 23.7 g was added to a mixture of n-octanol 50 g, water 14 g and 97% sodium hydroxide 8.2 g, and the resultant mixture was heated to 65° C. The mixture was then cooled to 50° C., and 9-fluorenone 2.0 g was added thereto. The resultant mixture was stirred at 90°~97° C. for 2 hours, thus almost all of the azobenzene having disappeared to produce 2-(2-hydroxy-3,5-di-t-butylphenyl)benzotriazole-N-oxide. Thus, the reaction of Process (b) was completed.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 특허 번호 | US04943637 |
|---|
| 출처 데이터셋 | uspto-grants-1990_07 |
|---|
| ORD ID | ord-d908e99898f14de0b035abb143b1c140 |
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| 출처 메모 | uspto-grants-1990_07 |
|---|
