Diisopropylethylamine → Methyl 2-methyl-2-(5-methyl-6-(2,2,2-trifluoroethoxy)picolinamido)propanoate

HRID 927335ノート

反応式

HRID 927335 の反応式
[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([C:14]([OH:16])=O)=[N:6][C:7]=1[O:8][CH2:9][C:10]([F:13])([F:12])[F:11].Cl.[CH3:18][O:19][C:20](=[O:25])[C:21]([CH3:24])([CH3:23])[NH2:22].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C=O)C>[CH3:23][C:21]([NH:22][C:14](=[O:16])[C:5]1[CH:4]=[CH:3][C:2]([CH3:1])=[C:7]([O:8][CH2:9][C:10]([F:11])([F:12])[F:13])[N:6]=1)([CH3:24])[C:20]([O:19][CH3:18])=[O:25]

参加物

6

反応物 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 13258034Methyl 2-aminoisobutyrate hydrochlorideHCID 710875095-Methyl-6-(2,2,2-trifluoro-ethoxy)-pyridine-2-carboxylic acid

生成物 1

HCID 71087523Methyl 2-methyl-2-(5-methyl-6-(2,2,2-trifluoroethoxy)picolinamido)propanoate収率 123.9%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

A solution of 5-methyl-6-(2,2,2-trifluoro-ethoxy)-pyridine-2-carboxylic acid (30 mg, 128 μmol), 2-methyl-alanine methyl ester hydrochloride (23.5 mg, 153 μmol), HATU (CAN 148893-10-1, 97.0 mg, 255 μmol) and DIEA (82.4 mg, 109 μl, 638 μmol) in DMF was stirred at ambient temperature for 72 h. The crude reaction mixture was concentrated in vacuo to give 53 mg of a yellow solid. This solid was purified by preparative TLC (silica gel, 2.0 mm, 1:1 heptane/i-PrOAc) and eluted from the silica gel with i-PrOAc. Filtration over speedex and evaporation under reduced pressure provided the title compound (10 mg, 23%) as colorless liquid, MS (EI): m/e=335.2 [M+H]+.

後処理

  1. customThe crude reaction mixture
  2. concentrationwas concentrated in vacuo

出典と根拠

ORDレコード
ord-05e699a02409423684e27be35afb8149
出典データセット
uspto-grants-2016_03
特許番号
US09290451B2

反応ノート

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