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Boron trichloride methylene chloride → 6-(N-(3-Chloro-4-hydroxyphenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide

HRID 2272346
ノート
印刷プレビュー

反応式

HRID 2272346 の反応式
C([O:8][C:9]1[CH:14]=[CH:13][C:12]([N:15]([C:20]2[C:39]([CH:40]3[CH2:42][CH2:41]3)=[CH:38][C:23]3[C:24]([C:34]([NH:36][CH3:37])=[O:35])=[C:25]([C:27]4[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=4)[O:26][C:22]=3[CH:21]=2)[S:16]([CH3:19])(=[O:18])=[O:17])=[CH:11][C:10]=1[Cl:43])C1C=CC=CC=1.B(Cl)(Cl)Cl.C(Cl)Cl>C(Cl)Cl.CCOC(C)=O>[Cl:43][C:10]1[CH:11]=[C:12]([N:15]([C:20]2[C:39]([CH:40]3[CH2:42][CH2:41]3)=[CH:38][C:23]3[C:24]([C:34]([NH:36][CH3:37])=[O:35])=[C:25]([C:27]4[CH:28]=[CH:29][C:30]([F:33])=[CH:31][CH:32]=4)[O:26][C:22]=3[CH:21]=2)[S:16]([CH3:19])(=[O:18])=[O:17])[CH:13]=[CH:14][C:9]=1[OH:8]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 20463568Boron trichloride methylene chlorideHCID 1317322996-(N-(4-(Benzyloxy)-3-chlorophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide

生成物 1

HCID 1317323006-(N-(3-Chloro-4-hydroxyphenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide収率 42.9%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒
HCID 8857
Ethyl Acetate
溶媒

実験手順

A solution of 6-(N-(4-(benzyloxy)-3-chlorophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (0.300 g, 0.485 mmol) in anhydrous DCM (12 mL) was cooled in an ice water bath and treated with 1M BCl3/DCM (2.00 mL, 2.00 mmol). After stirring in the ice bath for 10 minutes the solution was allowed to warm to RT. This solution was then combined with the solution from an analogous 50 mg scale reaction and poured into 50 mL of stirred ice water. The mixture was diluted with 50 mL of EtOAc, stirred vigorously for several minutes and the phases separated. The EtOAc solution was washed with water (2×), brine (1×), dried over sodium sulfate and concentrated to dryness at reduced pressure. The crude material was subjected to flash chromatography (silica gel, gradient from DCM to 1:1 DCM/EtOAc) followed by recrystallization from hexane/EtOAc to afford the title compound (0.110 g, 37%) as a white powder. Impure fractions from the above chromatography were combined, concentrated, and subjected to RP-HPLC purification (C18, MeCN/water/0.1% formic acid) to afford an additional portion of the title compound (0.107 g, 36%) for a total yield of 73%. 1H NMR (400 MHz, DMSO-d6) δ ppm 10.45 (s, 1H) 8.40-8.48 (m, 1H) 8.18 (s, 1H) 7.90-8.01 (m, 2H) 7.61 (d, J=2.6 Hz, 1H) 7.34-7.45 (m, 3H) 7.14 (s, 1H) 6.96 (d, J=8.8 Hz, 1H) 3.30 (s, 3H) 2.82 (d, J=4.6 Hz, 3H) 2.20-2.34 (m, 1H) 0.77-1.09 (m, 3H) 0.43 (br. s., 1H). LCMS (m/z, ES+)=529 (M+H+).

後処理

  1. customThis solution was then combined with the solution from an analogous 50 mg scale reaction
  2. customthe phases separated
  3. washThe EtOAc solution was washed with water (2×), brine (1×)
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated to dryness at reduced pressure
  6. customfollowed by recrystallization from hexane/EtOAc

出典と根拠

ORDレコード
ord-6380a24910ee4936904d68aedd543407
出典データセット
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09119868B2

反応ノート

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