N,N'-Dimethylethylenediamine → {(3S)-1-[4-(methoxymethyl)-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl]-5-oxopyrrolidin-3-yl}carbamic acid tert-butyl ester

HRID 1847033ノート

反応式

HRID 1847033 の反応式
[C:1]([O:5][C:6](=[O:14])[NH:7][C@@H:8]1[CH2:12][C:11](=[O:13])[NH:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2].Br[C:16]1[CH:17]=[CH:18][C:19]2[O:24][CH2:23][C:22](=[O:25])[N:21]([CH2:26][O:27][CH3:28])[C:20]=2[CH:29]=1.C(=O)([O-])[O-].[K+].[K+].CNCCNC>[Cu]I.ClCCl.C1(C)C=CC=CC=1>[C:1]([O:5][C:6](=[O:14])[NH:7][C@H:8]1[CH2:12][C:11](=[O:13])[N:10]([C:16]2[CH:17]=[CH:18][C:19]3[O:24][CH2:23][C:22](=[O:25])[N:21]([CH2:26][O:27][CH3:28])[C:20]=3[CH:29]=2)[CH2:9]1)([CH3:4])([CH3:2])[CH3:3]

参加物

8

反応物 4

HCID 8070N,N'-DimethylethylenediamineHCID 11430Potassium CarbonateHCID 71301758(R)-tert-Butyl (5-oxopyrrolidin-3-yl)carbamateHCID 867249556-Bromo-4-(methoxymethyl)-2H-1,4-benzoxazin-3(4H)-one

生成物 1

HCID 86724960{(3S)-1-[4-(methoxymethyl)-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl]-5-oxopyrrolidin-3-yl}carbamic acid tert-butyl ester収率 61.1%

試薬・触媒・溶媒 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 1140Toluene溶媒HCID 6344Dichloromethane溶媒

反応条件

温度
100 °C

実験手順

A mixture of [(3R)-5-oxopyrrolidin-3-yl]carbamic acid tert-butyl ester (synthesized with reference to WO2004/22536; 1.5 g, 7.49 mmol), 6-bromo-4-(methoxymethyl)-2H-1,4-benzoxazin-3(4H)-one (Reference Examples 36; 2.04 g 7.49 mmol), potassium carbonate (3.11 g, 22.5 mmol), copper (I) iodide (1.43 g, 7.49 mmol), N,N′-dimethylethylenediamine (0.80 ml, 7.49 mmol) and toluene (95 ml) was stirred overnight at 100° C. under a stream of nitrogen gas. After cooling, dichloromethane was added to the reaction solution to remove insoluble material by filtration and the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (n-hexane/ethyl acetate) to yield 1.79 g (61%) of the title compound in the form of a colorless foamy solid.

後処理

  1. temperatureAfter cooling
  2. customto remove insoluble material
  3. filtrationby filtration
  4. customthe solvent was removed under reduced pressure
  5. customThe obtained residue was purified by silica gel column chromatography (n-hexane/ethyl acetate)

出典と根拠

ORDレコード
ord-4822c646788a403fa467b2439fc31df0
出典データセット
uspto-grants-2015_02
特許番号
US08952010B2

反応ノート

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