4-Chlororesorcinol → 6-Chloro-7-hydroxy coumarin
반응식
[Cl:1][C:2]1[CH:8]=[CH:7][C:5]([OH:6])=[CH:4][C:3]=1[OH:9].[CH2:10]([CH:17](C(C)=O)[C:18](OCC)=[O:19])C1C=CC=CC=1>OS(O)(=O)=O>[Cl:1][C:2]1[CH:8]=[C:7]2[C:5](=[CH:4][C:3]=1[OH:9])[O:6][C:18](=[O:19])[CH:17]=[CH:10]2참가 물질
4
실험 절차
4-Chlororesorcinol (26.25 g, 0.182 mol) and ethyl 2-benzylacetoacetate (40 g, 0.182 mol) are mixed in 70% H2SO4 (350 mL) at 0° C. The reaction mixture is stirred at room temperature for 72 hours and poured into ice water. The solid is filtered and washed with water. The crude product is recrystallized from ethanol/chloroform to afford 6-chloro-7-hydroxy coumarin intermediate (37.52 g, 68.7%).
후처리
- filtrationThe solid is filtered
- washwashed with water
- customThe crude product is recrystallized from ethanol/chloroform
출처 및 근거
- ORD 기록
- ord-279ca8169b044fe6848cbe69eaa8ad7a
- 출처 데이터셋
- uspto-grants-2006_04
- 특허 번호
- US07026491B2
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