Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
Ethyl benzoylacetate → 3-Benzoyl-5,7-dimethoxy-2H-1-benzopyran-2-one
참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|---|---|---|
| 반응물 | Ethyl benzoylacetate | HCID 7170 | — |
| 반응물 | 4,6-Dimethoxysalicylaldehyde | HCID 69725 | — |
| 촉매 | Piperidine | HCID 8082 | — |
| 용매 | Acetonitrile | HCID 6342 | — |
| 생성물 | 3-Benzoyl-5,7-dimethoxy-2H-1-benzopyran-2-one | HCID 12777075 | — |
반응 단계
A mixture of 18.2 g 4,6-dimethoxysalicylaldehyde, 20.0 g ethyl benzoylacetate, 20 ml acetonitrile and 30 drops piperidine was heated gently on a hot plate for 45 minutes. After cooling the product was collected and recrystallized twice from acetonitrile and once from benzene containing a small amount of acetonitrile. m.p. 178° C.-179° C.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 특허 번호 | US04147552 |
| 출처 데이터셋 | uspto-grants-1979_04 |
| ORD ID | ord-ebb76a967e5e457da245dada4c59a35b |
| 출처 메모 | uspto-grants-1979_04 |