反応式
Brc1ccc(OCc2ccccc2)cc1.C[C@@H]1CN(C(=O)OC(C)(C)C)CCN1>C1CCOC1.CC(C)(C)P(C(C)(C)C)C(C)(C)C.CC(C)(C)P(C(C)(C)C)C(C)(C)C.CC(C)(C)P(C(C)(C)C)C(C)(C)C.CC(C)(C)[O-].[K+].[Pd]>C[C@@H]1CN(C(=O)OC(C)(C)C)CCN1c1ccc(OCc2ccccc2)cc1参加物
反応物 2
生成物 1
試薬・触媒・溶媒 4
反応条件
- 温度
- 75 °C
実験手順
A mixture of 1-(benzyloxy)-4-bromobenzene (789 mg, 3.00 mmol), (R)-tert-butyl 3-methylpiperazine-1-carboxylate (300 mg, 1.5 mmol), bis(tri-t- butylphosphine)palladium(0) (77 mg, 0.15 mmol) and potassium tert-butoxide (185 mg, 1.65 mmol) in THF (10 mL) was flushed with nitrogen and heated to 75 °C overnight. A further 0.1eq of bis(tri-t-butylphosphine)palladium(0) (77 mg, 0.15 mmol) was added and the reaction was heated for a further 2.5 hours. The solvent was evaporated and the residue dissolved in MeOH (10mL) and purified by ion exchange chromatography, using an SCX column. The desired product was eluted from the column using 0.35M NH3/MeOH and purified further by flash silica chromatography, elution gradient 0 to 20% EtOAc in isohexane. Pure fractions were evaporated to dryness to afford (R)-tert-butyl 4-(4-(benzyloxy)phenyl)-3-methylpiperazine-1-carboxylate (181 mg, 31.5 %) as an orange oil.
出典と根拠
- ORDレコード
- ord-53993d3e76914a9480a25e3f9305c2e9
- 出典データセット
- 750 AstraZeneca ELN dataset
- 元リンク
- 出典を表示
関連ノート
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