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Lithium Hydroxide → 1-[7-(2-Chloro-6-fluorobenzyl)-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperidine-3-carboxylic acid

HRID 1727032
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HRID 1727032 반응식
[Cl:1][C:2]1[CH:32]=[CH:31][CH:30]=[C:29]([F:33])[C:3]=1[CH2:4][N:5]1[C:13]2[C:12](=[O:14])[N:11]([CH3:15])[C:10](=[O:16])[N:9]([CH3:17])[C:8]=2[N:7]=[C:6]1[N:18]1[CH2:23][CH2:22][CH2:21][CH:20]([C:24]([O:26]CC)=[O:25])[CH2:19]1.[Li+].[OH-]>C1COCC1.O>[Cl:1][C:2]1[CH:32]=[CH:31][CH:30]=[C:29]([F:33])[C:3]=1[CH2:4][N:5]1[C:13]2[C:12](=[O:14])[N:11]([CH3:15])[C:10](=[O:16])[N:9]([CH3:17])[C:8]=2[N:7]=[C:6]1[N:18]1[CH2:23][CH2:22][CH2:21][CH:20]([C:24]([OH:26])=[O:25])[CH2:19]1
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참가 물질

5

반응물 2

HCID 3939Lithium HydroxideHCID 57565596Ethyl 1-[7-(2-chloro-6-fluorobenzyl)-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperidine-3-carboxylate

생성물 1

HCID 100038741-[7-(2-Chloro-6-fluorobenzyl)-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperidine-3-carboxylic acid수율 103.7%

시약·촉매·용매 2

HCID 962Water용매
HCID 8028
Tetrahydrofuran
용매
2회

실험 절차

A solution of ethyl 1-[7-(2-chloro-6-fluorobenzyl)-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperidine-3-carboxylate (5.0 g, 10.5 mmol) in 75 mL THF and 25 mL H2O at room temperature was treated with solid LiOH (1.8 g, 43.9 mmol). After stirring overnight the THF was removed under reduced pressure, and the residue was diluted with H2O. The aqueous layer was acidified to pH 4, and the aqueous layer was extracted with CH2Cl2. The combined extracts were concentrated under reduced pressure to give 4.9 g (>99% yield) of the title compound: 1H NMR (CDCl3, 400 MHz) δ7.18 (dt, 2H, J=8.1, 5.7), 7.14 (t, 1H, J=7.6), 6.98-6.90 (m, 1H), 5.57 (AB quartet, 2H, J=15.7, 5.7), 3.51 (s, 3H), 3.42 (dd, 1H, J=12.6, 4.0), 3.30 (s, 3H), 3.20-3.05 (m, 2 H), 2.94-2.83 (m, 1H), 2.59-2.47 (m, 1H), 2.03-1.93 (m, 1H), 1.75-1.40 (m, 3H); LRMS (ESI) m/z 450 (M+H+); TLC (hexanes:EtOAc/1:1) Rf=0.10.

후처리

  1. customwas removed under reduced pressure
  2. additionthe residue was diluted with H2O
  3. extractionthe aqueous layer was extracted with CH2Cl2
  4. concentrationThe combined extracts were concentrated under reduced pressure

출처 및 근거

ORD 기록
ord-c4ee5e387fc04a8f9ff27d4f2b2b53be
출처 데이터셋
uspto-grants-2009_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07495004B2

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