Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
Benzene → Acetic Anhydride
참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|---|---|---|
| 반응물 | Benzene | HCID 241 | — |
| 반응물 | Methanol | HCID 887 | — |
| 반응물 | Toluene | HCID 1140 | — |
| 반응물 | 3,5-Diacetyl-2,6-dihydroxy-4h-pyran-4-one | HCID 135465969 | — |
| 용매 | Sulfuric Acid | HCID 1118 | — |
| 생성물 | Acetic Anhydride | HCID 7918 | — |
| 생성물 | Acetonedicarboxylic acid | HCID 68328 | — |
| 생성물 | 3,5-Diacetyl-2,6-dihydroxy-4h-pyran-4-one | HCID 135465969 | — |
반응 단계
The starting materials of formula II above used herein are generally prepared by reaction of 3,5-diacetyl-4,6-dihydroxy-2H-pyran-2-one with the appropriate amine (RNH2). The reactants are usually heated at reflux in an inert organic solvent such as benzene, toluene or methanol for from two to twelve hours. 3,5-Diacetyl-4,6-dihydroxy-2H-pyran-2-one is obtained by reaction of acetonedicarboxylic acid and acetic anhydride in sulfuric acid at elevated temperature.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 특허 번호 | US04017633 |
| 출처 데이터셋 | uspto-grants-1977_04 |
| ORD ID | ord-a4080139efa24d0e88eb74d17b34b454 |
| 출처 메모 | uspto-grants-1977_04 |