참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|
| 반응물 | Cesium carbonate | HCID 10796 | — |
| 반응물 | Tris(1,1-dimethylethyl)phosphine | HCID 83681 | — |
| 반응물 | 2-Bromo-5-chlorotoluene | HCID 84476 | — |
| 반응물 | tert-Butyl piperazine-1-carboxylate | HCID 143452 | — |
| 촉매 | Bis(dibenzylideneacetone)palladium | HCID 9811564 | — |
| 용매 | Toluene | HCID 1140 | — |
| 생성물 | Tert-butyl 4-(4-chloro-2-methylphenyl)piperazine-1-carboxylate | HCID 66757902 | 20% |
반응 단계
2-Bromo-5-chlorotoluene (0.82 g, 4 mmol) and tert-Butyl 1-piperazine carboxylate (0.89 g, 2.32 mmol) were added to a solution of tri-t-butyl phosphine (0.033 g, 4 mmol %), tris(dibenzylideneacetone)dipalladium(0) (0.075 g, 2.0 mmol %) and cesium carbonate (1.95 g, 6.0 mmol) in toluene and heated to 80° C. overnight. The reaction mixture was filtered through celite and concentrated in vacuo. The crude product was purified on silica gel (gradient elution from 20% ethyl acetate/hexane to 50% ethyl acetate/hexane) to give the title compound in 20% yield. ESI-MS m/z: 311 (M+1), UV retention time: 3.49 min.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 특허 번호 | US07186729B2 |
|---|
| 출처 데이터셋 | uspto-grants-2007_03 |
|---|
| ORD ID | ord-6b5c1f8277504c4689871d4a49871d23 |
|---|
| 출처 메모 | uspto-grants-2007_03 |
|---|
