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反応

Methanol → Tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate

HRID 1749791

印刷プレビュー

反応式

HRID 1749791 の反応式

[OH:1][C:2]1[CH:11]=[CH:10][C:5]2[C:6](=[O:9])[CH2:7][O:8][C:4]=2[C:3]=1[CH2:12][N:13]1[CH2:18][CH2:17][N:16]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:15][CH2:14]1.CO.[C:28]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O.C1(C)C=CC=CC=1>C1COCC1>[CH3:28][O:1][C:2]1[CH:11]=[CH:10][C:5]2[C:6](=[O:9])[CH2:7][O:8][C:4]=2[C:3]=1[CH2:12][N:13]1[CH2:14][CH2:15][N:16]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:17][CH2:18]1

参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 5

HCID 887Methanol

HCID 1140Toluene

HCID 11776Triphenylphosphine

HCID 220568ethyl N-ethoxycarbonyliminocarbamate

HCID 60155786Tert-butyl 4-[(6-hydroxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate

生成物 1

HCID 60155878Tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate

収率 25.7%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A solution of tert-butyl 4-[(6-hydroxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.400 g, 1.15 mmol) obtained in Example A16, Step 1, methanol (0.0442 g, 1.38 mmol) and triphenylphosphine (0.454 g, 1.73 mmol) in THF (8 mL) was added with a solution of a 40% solution of diethyl azodicarboxylate in toluene (0.901 g, 2.07 mmol) in THF (2 mL), and the mixture was stirred overnight at room temperature. The reaction mixture was concentrated, and the resulting residue was purified by silica gel column chromatography (chloroform/ethyl acetate) to obtain tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.107 g, 25%).

後処理

concentrationThe reaction mixture was concentrated
customthe resulting residue was purified by silica gel column chromatography (chloroform/ethyl acetate)

出典と根拠

ORDレコード: ord-3fae58a6bc334b1f92c7c101f1c07f7f
出典データセット: uspto-grants-2015_10
DOI: 10.6084/m9.figshare.5104873.v1
特許番号: US09156827B2

反応ノート

読み込み中…

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