N,O-Dimethylhydroxylamine → 2-Isopropylamino-6-methyl-pyrimidine-4-carboxylic acid methoxy-methyl-amide

HRID 2069467ノート

反応式

HRID 2069467 の反応式
[CH:1]([NH:4][C:5]1[N:10]=[C:9]([C:11]([OH:13])=O)[CH:8]=[C:7]([CH3:14])[N:6]=1)([CH3:3])[CH3:2].CCN(C(C)C)C(C)C.CN([C:27]([O:31][N:32]1N=NC2C=CC=C[C:33]1=2)=[N+](C)C)C.[B-](F)(F)(F)F.CNOC>C(Cl)Cl>[CH3:27][O:31][N:32]([CH3:33])[C:11]([C:9]1[CH:8]=[C:7]([CH3:14])[N:6]=[C:5]([NH:4][CH:1]([CH3:2])[CH3:3])[N:10]=1)=[O:13]

参加物

6

反応物 4

HCID 14232N,O-DimethylhydroxylamineHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 669337152-(Isopropylamino)-6-methylpyrimidine-4-carboxylic acid

生成物 1

HCID 866453112-Isopropylamino-6-methyl-pyrimidine-4-carboxylic acid methoxy-methyl-amide収率 98.3%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

実験手順

To a solution of 2-isopropylamino-6-methyl-pyrimidine-4-carboxylic acid (2.0 g, 10.2 mmol) in DCM (45 mL), DIPEA (8.8 mL, 51.2 mmol) followed by TBTU (3.9 g, 12.3 mmol) is added. The mixture is stirred at rt for 30 min before N,O-dimethylhydroxylamine (1.20 g, 12.3 mmol) is added. The mixture is stirred at rt for 18 h before it is diluted with DCM, washed with sat. aq. NaHCO3, followed by water, dried over MgSO4, filtered and concentrated. The crude product is purified by CC on silica gel eluting with heptane:EA 1:2 to give 2-isopropylamino-6-methyl-pyrimidine-4-carboxylic acid methoxy-methyl-amide (2.39 g) as a yellow oil; LC-MS: tR=0.66 min, [M+H]+=239.03; 1H NMR (D6-DMSO): δ 1.14 (d, J=6.5 Hz, 6H), 2.28 (s, 3H), 3.23 (s, 3H), 3.67 (s, 3H), 4.05 (m, 1H), 6.50 (s br, 1H), 7.12 (s br, 1H).

後処理

  1. additionis added
  2. additionis added
  3. washwashed with sat. aq. NaHCO3
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product is purified by CC on silica gel eluting with heptane:EA 1:2

出典と根拠

ORDレコード
ord-026240c4ae69424b99e69041d31afc53
出典データセット
uspto-grants-2012_10
特許番号
US08299086B2

反応ノート

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