Water → tert-butyl 9-(2-formyl-3-furyl)-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate

HRID 886916ノート

反応式

HRID 886916 の反応式
Br[C:2]1[C:12]2[O:11][CH2:10][CH2:9][N:8]([C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH2:7][C:6]=2[CH:5]=[CH:4][CH:3]=1.[CH:20]([C:22]1[O:23][CH:24]=[CH:25][C:26]=1B1OC(C)(C)C(C)(C)O1)=[O:21].C(=O)([O-])[O-].[Na+].[Na+].O>COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:20]([C:22]1[O:23][CH:24]=[CH:25][C:26]=1[C:2]1[C:12]2[O:11][CH2:10][CH2:9][N:8]([C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH2:7][C:6]=2[CH:5]=[CH:4][CH:3]=1)=[O:21]

参加物

7

反応物 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 164141993-(Tetramethyl-1,3,2-dioxaborolan-2-yl)furan-2-carbaldehydeHCID 59403519Tert-butyl 9-bromo-2,3-dihydrobenzo[F][1,4]oxazepine-4(5H)-carboxylate

生成物 1

HCID 86640604tert-butyl 9-(2-formyl-3-furyl)-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate収率 48.5%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 80711,2-Dimethoxyethane溶媒

反応条件

温度
85 °C

実験手順

A mixture of tert-butyl 9-bromo-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate (1.48 g, 4.50 mmol), 2-formylfuran-3-boronic acid pinacol ester (1.00 g, 4.50 mmol), saturated aqueous sodium carbonate solution (20 ml), and tetrakis(triphenylphosphine)palladium(0) (147 mg, 0.127 mmol) in ethylene glycol dimethyl ether (25 ml) was stirred under a nitrogen atmosphere at 85° C. for 12 hr. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The extract was washed with water, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1) to give the desired product (750 mg, 48.4%) as an oil.

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1)

出典と根拠

ORDレコード
ord-0f675f15b1d648099d204720fd18fa0e
出典データセット
uspto-grants-2012_08
特許番号
US08247403B2

反応ノート

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