Methanol → 8-(3-Acetyl-5-ethoxy-2-methyl-1,4-dihydro-1,6-naphthyridin-4-yl)-2-methyl-4H-chromen-4-one

HRID 1951404ノート

反応式

HRID 1951404 の反応式
[C:1]([C:4]1[CH:13]([C:14]2[CH:15]=[CH:16][CH:17]=[C:18]3[C:23]=2[O:22][C:21]([CH3:24])=[CH:20][C:19]3=[O:25])[C:12]2[C:11](=[O:26])[NH:10][CH:9]=[CH:8][C:7]=2[NH:6][C:5]=1[CH3:27])(=[O:3])[CH3:2].FC(F)(F)S(O[CH2:34][CH3:35])(=O)=O.CO>C1COCC1>[C:1]([C:4]1[CH:13]([C:14]2[CH:15]=[CH:16][CH:17]=[C:18]3[C:23]=2[O:22][C:21]([CH3:24])=[CH:20][C:19]3=[O:25])[C:12]2[C:7](=[CH:8][CH:9]=[N:10][C:11]=2[O:26][CH2:34][CH3:35])[NH:6][C:5]=1[CH3:27])(=[O:3])[CH3:2]

参加物

5

反応物 3

HCID 887MethanolHCID 67924Ethyl trifluoromethanesulphonateHCID 596030093-Acetyl-2-methyl-4-(2-methyl-4-oxo-4H-chromen-8-yl)-4,6-dihydro-1,6-naphthyridin-5(1H)-one

生成物 1

HCID 247983288-(3-Acetyl-5-ethoxy-2-methyl-1,4-dihydro-1,6-naphthyridin-4-yl)-2-methyl-4H-chromen-4-one

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

60 mg (0.16 mmol) of 3-acetyl-2-methyl-4-(2-methyl-4-oxo-4H-chromen-8-yl)-4,6-dihydro-1,6-naphthyridin-5(1H)-one are suspended in THF (4 ml), and 0.18 ml (0.18 mmol) of N′″-(tert-butyl)-N,N′,N″-tris[tris(dimethylamino)phosphoranylidene]phosphorimide triamide (phosphazene base P4-t-Bu; 1 M in hexane) is added. Then 25 μl (0.199 mmol) of ethyl trifluoromethanesulfonate are added to the dark red solution. The decolorized solution is stirred for 10 min and then mixed with methanol and concentrated. The residue is purified by preparative HPLC to result in 35 mg (54% of theory) of the title compound as a white solid.

後処理

  1. concentrationconcentrated
  2. customThe residue is purified by preparative HPLC

出典と根拠

ORDレコード
ord-b4f1c225a0f347659a8b18c2519dfaff
出典データセット
uspto-grants-2013_03
特許番号
US08404709B2

反応ノート

読み込み中…