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Ethyl Acetate → Benzyl 3-(6-{3-[(tert-butoxycarbonyl)amino]prop-1-ynyl}pyridin-3-yl)prop-2-ynylcarbamate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Ethyl Acetate | HCID 8857 | — |
| 反応物 | 2,5-Dibromopyridine | HCID 69353 | — |
| 反応物 | tert-butyl N-(prop-2-yn-1-yl)carbamate | HCID 11073648 | — |
| 反応物 | Benzyl prop-2-yn-1-ylcarbamate | HCID 11137906 | — |
| 触媒 | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| 触媒 | HCID 178418476 | HCID 178418476 | — |
| 溶媒 | Diisopropylamine | HCID 7912 | — |
| 生成物 | Benzyl 3-(6-{3-[(tert-butoxycarbonyl)amino]prop-1-ynyl}pyridin-3-yl)prop-2-ynylcarbamate | HCID 21299383 | 11.9% |
反応手順
A mixture of 2,5-dibromopyridine (1.19 g), N-Boc-propargylamine (781 mg), Pd(PPh3)2Cl2 (73 mg), and CuI (10 mg) in diisopropylamine (20 mL) was stirred at room temperature overnight under nitrogen atmosphere. To the mixture was added N-Cbz-propargylamine (1.14 g) and the mixture was heated under reflux temperature for 5 hours under nitrogen atmosphere. The mixture was cooled to room temperature. To the mixture was added ethyl acetate (50 mL). The precipitates were filtered and washed with ethyl acetate. The filtrate and washings were combined and purified by silica gel column to give 6-1 (250 mg) as a crystalline compound.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US06706885B2 |
| 出典データセット | uspto-grants-2004_03 |
| ORD ID | ord-23e7eb85123f438d84ad90e4f736190c |
| 出典メモ | uspto-grants-2004_03 |