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Sodium ethoxide → Tert-butyl 4-(7-methoxy-3-(2-(methylamino)pyrimidin-4-yl)naphthalen-1-yl)piperazine-1-carboxylate

HRID 1921982
ノート
印刷プレビュー

反応式

HRID 1921982 の反応式
CN(C)/[CH:3]=[CH:4]/[C:5]([C:7]1[CH:8]=[C:9]([N:19]2[CH2:24][CH2:23][N:22]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:21][CH2:20]2)[C:10]2[C:15]([CH:16]=1)=[CH:14][CH:13]=[C:12]([O:17][CH3:18])[CH:11]=2)=O.Cl.[CH3:34][N:35](N)[C:36]([NH2:38])=[NH:37].[O-]CC.[Na+]>C(O)C>[CH3:18][O:17][C:12]1[CH:11]=[C:10]2[C:15]([CH:16]=[C:7]([C:5]3[CH:4]=[CH:3][N:38]=[C:36]([NH:35][CH3:34])[N:37]=3)[CH:8]=[C:9]2[N:19]2[CH2:20][CH2:21][N:22]([C:25]([O:27][C:28]([CH3:30])([CH3:31])[CH3:29])=[O:26])[CH2:23][CH2:24]2)=[CH:14][CH:13]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 2723922Sodium ethoxide2 回HCID 21432264Methyl amino guanidine hydrochlorideHCID 67306919(E)-tert-butyl 4-(3-(3-(dimethylamino)acryloyl)-7-methoxynaphthalen-1-yl)piperazine-1-carboxylate

生成物 1

HCID 53257824Tert-butyl 4-(7-methoxy-3-(2-(methylamino)pyrimidin-4-yl)naphthalen-1-yl)piperazine-1-carboxylate

試薬・触媒・溶媒 1

HCID 702
Ethanol
溶媒
2 回

実験手順

To a solution of tert-butyl 4-(3-(3-(dimethylamino)acryloyl)-7-methoxynaphthalen-1-yl)piperazine-1-carboxylate 108 (1.5 g) in ethanol (50 ml) was added methyl amino guanidine hydrochloride (0.75 g) and 21% wt sodium ethoxide in ethanol (1 ml). The reaction was stirred at reflux for 2 days, and more sodium ethoxide (0.5 ml) was added to the reaction. The reaction was allowed to reflux overnight. The solvents were concentrated under reduced pressure and the residue was redissolved in ethyl acetate (100 ml) and water (50 ml). The organics were separated, washed with water (1×50 ml), dried over sodium sulfate and concentrated. Column chromatography (pre-packed SiO2, 40% ethyl acetate in hexanes to 75% ethyl acetate in hexanes) gave tert-butyl 4-(7-methoxy-3-(2-(methylamino)pyrimidin-4-yl)naphthalen-1-yl)piperazine-1-carboxylate 111 as a light yellow solid. LC/MS (m/z): 450 [M+H].

後処理

  1. temperatureat reflux for 2 days
  2. temperatureto reflux overnight
  3. concentrationThe solvents were concentrated under reduced pressure
  4. dissolutionthe residue was redissolved in ethyl acetate (100 ml)
  5. customThe organics were separated
  6. washwashed with water (1×50 ml)
  7. dry with materialdried over sodium sulfate
  8. concentrationconcentrated

出典と根拠

ORDレコード
ord-1e401605b6584671998960ac8640d5e1
出典データセット
uspto-grants-2012_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08173808B2

反応ノート

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