Trifluoromethanesulfonic acid, lithium salt → 3-(8-Fluoro-1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-ylamino)-2-hydroxypropionic acid methyl ester

HRID 723914

반응식

HRID 723914 반응식
[NH2:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([F:12])[CH:11]=1)[N:8]([CH3:13])[C:7](=[O:14])[CH2:6][CH2:5]2.[CH3:15][O:16][C:17]([C@@H:19]1[O:21][CH2:20]1)=[O:18].FC(F)(F)S([O-])(=O)=O.[Li+]>C(#N)C>[CH3:15][O:16][C:17](=[O:18])[CH:19]([OH:21])[CH2:20][NH:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([F:12])[CH:11]=1)[N:8]([CH3:13])[C:7](=[O:14])[CH2:6][CH2:5]2

참가 물질

5

반응물 3

HCID 3664839Trifluoromethanesulfonic acid, lithium saltHCID 9877347Methyl (2R)-2-oxiranecarboxylateHCID 218777156-amino-8-fluoro-1-methyl-3,4-dihydro-1H-quinolin-2-one

생성물 1

HCID 684917263-(8-Fluoro-1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-ylamino)-2-hydroxypropionic acid methyl ester수율 62%

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

6-Amino-8-fluoro-1-methyl-3,4-dihydro-1H-quinolin-2-one (Step 3, 2.25 g, 0.0116 mol), methyl (2R)-glycidate (1.18 g, 0.0116 mol) and lithium trifluoromethanesulfonate (1.81 g, 0.0116 mol) in acetonitrile (10 ml) are heated at 90° C. overnight. The reaction is concentrated and the residue diluted with ethyl acetate, washed with water and saline, dried (MgSO4) and evaporated. The residue is purified by flash column chromatography (50% ethyl acetate/hexane) to give the title compound as a yellow solid (2.13 g, 62%); MS (m/z): [M+H]+=297.

후처리

  1. concentrationThe reaction is concentrated
  2. additionthe residue diluted with ethyl acetate
  3. washwashed with water and saline
  4. dry with materialdried (MgSO4)
  5. customevaporated
  6. customThe residue is purified by flash column chromatography (50% ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-3ef6839eecad474f8a4d155e2ab712ff
출처 데이터셋
uspto-grants-2006_11
특허 번호
US07141588B2

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