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Diisopropylethylamine → 5-(3-Fluoro-phenylethynyl)-pyridine-2-carboxylic acid tert-butyl-ethyl-amide

HRID 2199412
ノート
印刷プレビュー

反応式

HRID 2199412 の反応式
[F:1][C:2]1[CH:3]=[C:4]([C:8]#[C:9][C:10]2[CH:11]=[CH:12][C:13]([C:16]([OH:18])=O)=[N:14][CH:15]=2)[CH:5]=[CH:6][CH:7]=1.CCN(C(C)C)C(C)C.[C:28]([NH:32][CH2:33][CH3:34])([CH3:31])([CH3:30])[CH3:29].CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F>O1CCOCC1>[C:28]([N:32]([CH2:33][CH3:34])[C:16]([C:13]1[CH:12]=[CH:11][C:10]([C:9]#[C:8][C:4]2[CH:5]=[CH:6][CH:7]=[C:2]([F:1])[CH:3]=2)=[CH:15][N:14]=1)=[O:18])([CH3:31])([CH3:30])[CH3:29]
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 81531DiisopropylethylamineHCID 521156N-tert-ButylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 533848625-((3-Fluorophenyl)ethynyl)picolinic acid

生成物 1

HCID 736028105-(3-Fluoro-phenylethynyl)-pyridine-2-carboxylic acid tert-butyl-ethyl-amide収率 76.7%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒

実験手順

(100 mg, 0.41 mmol) 5-(3-Fluoro-phenylethynyl)-pyridine-2-carboxylic acid (Example 1, step 2) was dissolved in dioxane (1 ml) and Hunig's Base (217 μl, 1.24 mmol, 3 equiv.), tert.-butylethylamine (63 mg, 0.62 mmol, 1.5 equiv.) and TBTU (146 mg, 0.45 mmol, 1.1 equiv.) were added at room temperature. The mixture was stirred for 16 hours at room temperature. The reaction mixture was evaporated and extracted saturated NaHCO3 solution and two times with a small volume of dichloromethane. The crude product was purified by flash chromatography by directly loading the dichloromethane layers onto a silica gel column and eluting with an ethyl acetate:heptane gradient 0:100 to 0:100. The desired 5-(3-fluoro-phenylethynyl)-pyridine-2-carboxylic acid tert-butyl-ethyl-amide (102 mg, 76% yield) was obtained as a light yellow oil, MS: m/e=325.3 (M+H+).

後処理

  1. customThe reaction mixture was evaporated
  2. extractionextracted saturated NaHCO3 solution and two times with a small volume of dichloromethane
  3. customThe crude product was purified by flash chromatography
  4. washeluting with an ethyl acetate

出典と根拠

ORDレコード
ord-61549898245a41be9e6498ba466a0377
出典データセット
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09359301B2

反応ノート

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