Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
Piperidine → 5-{5-[2-(2-Bromoethenyl)-4-(4,5-dihydro-2-oxazolyl)phenoxy]pentyl}-3-methylisoxazole
참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|---|---|---|
| 반응물 | Piperidine | HCID 8082 | — |
| 반응물 | Benzaldehyde, 5-(4,5-dihydro-2-oxazolyl)-2-((5-(3-methyl-5-isoxazolyl)pentyl)oxy)- | HCID 5271233 | — |
| 반응물 | Triphenylphosphine bromide | HCID 22470945 | — |
| 반응물 | Butyllithium | HCID 178418339 | — |
| 용매 | Diethyl Ether | HCID 3283 | — |
| 용매 | Tetrahydrofuran | HCID 8028 | — |
| 생성물 | 5-{5-[2-(2-Bromoethenyl)-4-(4,5-dihydro-2-oxazolyl)phenoxy]pentyl}-3-methylisoxazole | HCID 54238410 | — |
반응 단계
To a solution of 1.255 g piperidine in 100 ml ether at 0° under nitrogen was added 12 ml n-butyllithium (1.23 m) followed by 5 g triphenylphosphine bromide. The mixture was then stirred two hours at room temperature and 4.78 g 5-{5-[2-formyl-4-(4,5-dihydro-2-oxazolyl)phenoxy]pentyl}-3-methylisoxazole (Example 70) in 35 ml tetrahydrofuran was added dropwise. The reaction mixture was kept overnight at room temperature and worked up by chromatography to give 0.53 g 5-{5-[2-(2-bromoethenyl)-4-(4,5-dihydro-2-oxazolyl)phenoxy]pentyl}-3-methylisoxazole, colorless needles, m.p. 94°-96° C. after recrystallization from isopropyl acetate and hexane.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 특허 번호 | US05002960 |
| 출처 데이터셋 | uspto-grants-1991_03 |
| ORD ID | ord-03bdfa59e2994649a9f6b2c8e9c6b9b0 |
| 출처 메모 | uspto-grants-1991_03 |