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1,1,3,3-Tetramethylguanidine → (R)-5,5-difluoro-4-[5-fluoro-2-(4-methoxy-benzyl)-1H-indol-6-yl]-4-methyl-5,6-dihydro-4H-[1,3]oxazin-2-ylamine

HRID 1626141
ノート
印刷プレビュー

反応式

HRID 1626141 の反応式
[NH2:1][C:2]1[C:3](I)=[CH:4][C:5]([F:18])=[C:6]([C@:8]2([CH3:17])[C:13]([F:15])([F:14])[CH2:12][O:11][C:10]([NH2:16])=[N:9]2)[CH:7]=1.CN(C)C(N(C)C)=N.[CH3:28][O:29][C:30]1[CH:35]=[CH:34][C:33]([CH2:36][C:37]#[CH:38])=[CH:32][CH:31]=1>CN(C)C=O.C(=O)([O-])O.[Na+].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.Cl[Pd]Cl.[Cu]I>[F:14][C:13]1([F:15])[CH2:12][O:11][C:10]([NH2:16])=[N:9][C@@:8]1([C:6]1[CH:7]=[C:2]2[C:3]([CH:38]=[C:37]([CH2:36][C:33]3[CH:32]=[CH:31][C:30]([O:29][CH3:28])=[CH:35][CH:34]=3)[NH:1]2)=[CH:4][C:5]=1[F:18])[CH3:17]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

8

反応物 3

HCID 664601,1,3,3-TetramethylguanidineHCID 107731151-Methoxy-4-(prop-2-yn-1-yl)benzeneHCID 58304250(R)-4-(5-amino-2-fluoro-4-iodo-phenyl)-5,5-difluoro-4-methyl-5,6-dihydro-4H-[1,3]oxazin-2-ylamine

生成物 1

HCID 71009041(R)-5,5-difluoro-4-[5-fluoro-2-(4-methoxy-benzyl)-1H-indol-6-yl]-4-methyl-5,6-dihydro-4H-[1,3]oxazin-2-ylamine収率 33.4%

試薬・触媒・溶媒 4

HCID 24350
Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)
触媒
HCID 6102075Dichlorobis(triphenylphosphine)palladium触媒
HCID 6228Dimethylformamide溶媒2 回
HCID 516892Sodium Bicarbonate溶媒

反応条件

温度
80 °C

実験手順

A solution of (R)-4-(5-amino-2-fluoro-4-iodo-phenyl)-5,5-difluoro-4-methyl-5,6-dihydro-4H-[1,3]oxazin-2-ylamine (intermediate B6.1) (100 mg, 260 μmol) N,N-dimethylformamide (0.5 ml) was purged with argon for 10 minutes. Thereafter, 1,1,3,3-tetramethylguanidine (74.8 mg, 81.3 μl, 649 μmol), bis-(triphenylphosphin)-palladium(II)dichlorid (9.11 mg, 13.0 μmol) and copper (I) iodide (7.42 mg, 38.9 μmol) were added. After 5 minutes at room temperature, a solution of 1-methoxy-4-prop-2-ynyl-benzene (CAS [13540-76-6]) (45.5 mg, 312 μmol) in N,N-dimethylformamide (0.2 ml) was added and the reaction mixture was stirred at 80° C. for 15 hours. For the workup, the reaction mixture was allowed to cool to room temperature, then it was diluted with a saturated solution of sodium hydrogencarbonate and extracted with ethyl acetate. The combined organic layers were dried over sodium sulphate and evaporated at reduced pressure. The crude product was purified by flash chromatography on a silica-NH2 phase using a gradient of heptane/ethyl acetate=100:0 to 0:100 as the eluent. The (R)-5,5-difluoro-4-[5-fluoro-2-(4-methoxy-benzyl)-1H-indol-6-yl]-4-methyl-5,6-dihydro-4H-[1,3]oxazin-2-ylamine (35 mg, 33% yield) was obtained as a light green foam. MS (ISP): m/z=404.4 [M+H]+.

後処理

  1. temperatureto cool to room temperature
  2. extractionextracted with ethyl acetate
  3. dry with materialThe combined organic layers were dried over sodium sulphate
  4. customevaporated at reduced pressure
  5. customThe crude product was purified by flash chromatography on a silica-NH2 phase

出典と根拠

ORDレコード
ord-fab20a470adc4b4b836413d3433a9f8d
出典データセット
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08785436B2

反応ノート

読み込み中…

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