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Tributylphosphine → (5S)-3-(3-fluoro-4-imidazol-1-yl-phenyl)-5-[(isoxazol-3-ylamino)methyl]oxazolidin-2-one

HRID 8147
ノート
印刷プレビュー

反応式

HRID 8147 の反応式
[N:1]1([C:6]2[CH:11]=[CH:10][C:9]([N:12]3[CH2:16][C@H:15]([CH2:17]O)[O:14][C:13]3=[O:19])=[CH:8][C:7]=2[F:20])[CH:5]=[CH:4][N:3]=[CH:2]1.ClC(Cl)(Cl)COC([NH:27][C:28]1[CH:32]=[CH:31][O:30][N:29]=1)=O.C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>O1CCCC1>[O:30]1[CH:31]=[CH:32][C:28]([NH:27][CH2:17][C@@H:15]2[O:14][C:13](=[O:19])[N:12]([C:9]3[CH:10]=[CH:11][C:6]([N:1]4[CH:5]=[CH:4][N:3]=[CH:2]4)=[C:7]([F:20])[CH:8]=3)[CH2:16]2)=[N:29]1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 12114192,2,2-Trichloroethyl isoxazol-3-ylcarbamateHCID 104927643-(3-Fluoro-4-(imidazol-1-yl)phenyl)-5(R)-hydroxymethyloxazolidin-2-one

生成物 1

HCID 497417(5S)-3-(3-fluoro-4-imidazol-1-yl-phenyl)-5-[(isoxazol-3-ylamino)methyl]oxazolidin-2-one収率 158.5%

試薬・触媒・溶媒

1
HCID 8028Tetrahydrofuran溶媒2 回

実験手順

3-(4-Imidazol-1-yl-3-fluorophenyl)-5(R)-hydroxymethyloxazolidin-2-one (693 mg, 2.5 mM, see WO 96-23788) and 3-(2,2,2-trichloroethyloxycarbonylamino)isoxazole (649 mg, 2.5 mM) were suspended by stirring in dry tetrahydrofuran (25 ml) under nitrogen in an ice-bath. Tributylphosphine (808 mg, 4 mM) was added followed by 1,1′-(azodicarbonyl)dipiperidine (945 mg, 3.75 nM) dissolved in tetrahydrofuran (10 ml) over 10 minutes. The mixture was then stirred 18 hours, allowing the temperature to rise to ambient, then filtered, and the filter cake washed with tetrahydrofuran. The combined filtrates were evaporated and the residue purified by chromatography on a 20 g silica Mega Bond Elut® column, eluting with a gradient increasing in polarity from 0 to 5% methanol in dichloromethane. Relevant fractions were combined, evaporated, and the residue triturated with diethyl ether to give the desired product (1.36 g), contaminated with tributylphosphine oxide.

後処理

  1. filtrationthen filtered
  2. washthe filter cake washed with tetrahydrofuran
  3. customThe combined filtrates were evaporated
  4. customthe residue purified by chromatography on a 20 g silica Mega Bond Elut® column
  5. washeluting with
  6. temperaturea gradient increasing in polarity from 0 to 5% methanol in dichloromethane
  7. customevaporated
  8. customthe residue triturated with diethyl ether

出典と根拠

ORDレコード
ord-a99a9a93cf9f400f97f0c5d45b51636c
出典データセット
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07087629B2

反応ノート

読み込み中…

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