Cesium carbonate → 5-(4-(difluoromethoxy)-3-methoxy-2-((3-(methoxymethyl)oxetan-3-yl)methoxy)phenyl)isobenzofuran-1(3H)-one

HRID 2171091ノート

反応式

HRID 2171091 の反応式
Br[C:2]1[C:7]([O:8][CH2:9][C:10]2([CH2:14][O:15][CH3:16])[CH2:13][O:12][CH2:11]2)=[C:6]([O:17][CH3:18])[C:5]([O:19][CH:20]([F:22])[F:21])=[CH:4][CH:3]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C(C)(C)OB([C:37]2[CH:38]=[C:39]3[C:43](=[CH:44][CH:45]=2)[C:42](=[O:46])[O:41][CH2:40]3)O1>CN(C)C=O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[F:21][CH:20]([F:22])[O:19][C:5]1[CH:4]=[CH:3][C:2]([C:37]2[CH:38]=[C:39]3[C:43](=[CH:44][CH:45]=2)[C:42](=[O:46])[O:41][CH2:40]3)=[C:7]([O:8][CH2:9][C:10]2([CH2:14][O:15][CH3:16])[CH2:13][O:12][CH2:11]2)[C:6]=1[O:17][CH3:18]

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 580746235-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3H-2-benzofuran-1-oneHCID 674676123-((6-Bromo-3-(difluoromethoxy)-2-methoxyphenoxy)methyl)-3-(methoxymethyl)oxetane

生成物 1

HCID 674668085-(4-(difluoromethoxy)-3-methoxy-2-((3-(methoxymethyl)oxetan-3-yl)methoxy)phenyl)isobenzofuran-1(3H)-one収率 12%

試薬・触媒・溶媒 2

HCID 11979704Tetrakis(triphenylphosphine)palladium触媒HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

A stirring solution of 3-((6-bromo-3-(difluoromethoxy)-2-methoxyphenoxy)methyl)-3-(methoxymethyl)oxetane (220 mg, 0.574 mmol) in dimethylformamide (10 mL) was purged with argon for 1 h, to this cesium carbonate (561 mg, 1.72 mmol), tetrakis(triphenylphosphine) palladium(0) (19 mg, 0.017 mmol) and 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isobenzofuran-1(3H)-one (178 mg, 0.686 mmol) was added and the resultant reaction mixture was heated to 80° C. for 16 h. The reaction mixture was cooled to RT and filtered through celite and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, 0-80% ethyl acetate in pet ether) to afford title compound as a solid (30 mg, 12%).

後処理

  1. additionwas added
  2. customthe resultant reaction mixture
  3. temperatureThe reaction mixture was cooled to RT
  4. filtrationfiltered through celite
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customThe residue was purified by column chromatography (silica gel, 0-80% ethyl acetate in pet ether)

出典と根拠

ORDレコード
ord-aa44654842654b0682a05d720ecf3f37
出典データセット
uspto-grants-2015_06
特許番号
US09051290B2

反応ノート

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