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Calcium Carbonate → 2,2-Dimethylpropanoic acid, [6-[[(4-acetylphenyl)-2-propynylamino]methyl]-4-oxo-3(4H)-quinazolinyl]methyl ester

HRID 1722695
ノート
印刷プレビュー

反応式

HRID 1722695 の反応式
[CH3:1][C:2]([CH3:21])([CH3:20])[C:3]([O:5][CH2:6][N:7]1[C:16](=[O:17])[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([CH2:18]Br)[CH:14]=2)[N:9]=[CH:8]1)=[O:4].[CH2:22]([NH:25][C:26]1[CH:31]=[CH:30][C:29]([C:32](=[O:34])[CH3:33])=[CH:28][CH:27]=1)[C:23]#[CH:24].C(=O)([O-])[O-].[Ca+2]>CC(N(C)C)=O>[CH3:1][C:2]([CH3:21])([CH3:20])[C:3]([O:5][CH2:6][N:7]1[C:16](=[O:17])[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([CH2:18][N:25]([C:26]3[CH:27]=[CH:28][C:29]([C:32](=[O:34])[CH3:33])=[CH:30][CH:31]=3)[CH2:22][C:23]#[CH:24])[CH:14]=2)[N:9]=[CH:8]1)=[O:4]
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

5

反応物 3

HCID 10112Calcium CarbonateHCID 11469351Ethanone, 1-[4-(2-propynylamino)phenyl]-HCID 136912136-Bromomethyl-3,4-dihydro-4-oxo-3-((pivaloyl)oxy)methylquinazoline

生成物 1

HCID 146499992,2-Dimethylpropanoic acid, [6-[[(4-acetylphenyl)-2-propynylamino]methyl]-4-oxo-3(4H)-quinazolinyl]methyl ester収率 186.8%

試薬・触媒・溶媒 1

HCID 31374
Dimethylacetamide
溶媒

反応条件

温度
80 °C

実験手順

A suspension of 5.79 g (12.5 mmol) of 75% pure 2,2-dimethylpropanoic acid, [6-(bromomethyl)-4-oxo-3(4H)-quinazolinyl]methyl ester (European patent application 204,529), 2.89 g (16.7 mmol) of 1-[4-(2-propynylamino)phenyl]ethanone (see Example A), and 3.34 g (33.4 mmol) of dry calcium carbonate in 100 ml of dimethylacetamide (DMA) is stirred at 80° C. for eighteen hours. The suspension is poured into a water-ice mixture and stirred. The suspension is extracted with ethyl acetate. The ethyl acetate solution is dried (magnesium sulfate) and concentrated to give 10.4 g of a yellow oil. This is dissolved in a minimum amount of dichloromethane and applied to a column of 1 kg of flash silica gel packed in dichloromethane/methanol (100:1). Elution with the same solvent gives 2.83 g (50.8%) of impure product as a yellow gum followed by 2.34 g (42.0% assuming 75% pure bromomethyl compound) of the product as a cream colored foam. This is used as is without characterization in the next reaction.

後処理

  1. stirringstirred
  2. extractionThe suspension is extracted with ethyl acetate
  3. dry with materialThe ethyl acetate solution is dried (magnesium sulfate)
  4. concentrationconcentrated

出典と根拠

ORDレコード
ord-396b2db1f812405dbccb6f68348679a1
出典データセット
uspto-grants-1989_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04857530

反応ノート

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