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Sodium hydride → tert-Butyl{1-[2-(6,7-difluoro-2-oxoquinoxalin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Sodium hydride | HCID 24758 | — |
| 反応物 | 6,7-Difluoro-1,2-dihydroquinoxalin-2-one | HCID 6324339 | — |
| 反応物 | 2-(4-((Tert-butoxycarbonyl)amino)piperidin-1-yl)ethyl methanesulfonate | HCID 56834478 | — |
| 反応物 | tert-butyl {1-[2-(7-methoxy-2-oxoquinolin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate | HCID 59371209 | — |
| 溶媒 | Toluene ethylacetate | HCID 21584019 | — |
| 生成物 | tert-Butyl{1-[2-(6,7-difluoro-2-oxoquinoxalin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate | HCID 86642644 | 23% |
反応手順
6,7-Difluoroquinoxalin-2(1H)-one (Intermediate 152, 1.0 g, 5.50 mmol) was deprotonated with sodium hydride (60% in oil, 0.26 g, 6.60 mmol) and alkylated with 2-{4-[(tert-butoxycarbonyl)amino]piperidin-1-yl}ethyl methanesulfonate (Intermediate 6) (6.6 mmol) as described for Intermediate 2. Chromatography on silica gel with 5% toluene/ethyl acetate gave 500 mg (23%) of the product as a colorless solid.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US08124602B2 |
| 出典データセット | uspto-grants-2012_02 |
| ORD ID | ord-bdd10bb3792343d3a86856916fad601e |
| 出典メモ | uspto-grants-2012_02 |