Methanol → N-[6-(1-hydroxy-ethyl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide

HRID 1894010노트

반응식

HRID 1894010 반응식
[C:1]([C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][C:13]=1[C:14]([F:17])([F:16])[F:15])[NH:10][C:9](=[O:18])[N:8]([NH:19][S:20]([CH3:23])(=[O:22])=[O:21])[C:7]2=[O:24])(=[O:3])[CH3:2].CO.[BH4-].[Na+]>C1COCC1>[OH:3][CH:1]([C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][C:13]=1[C:14]([F:16])([F:15])[F:17])[NH:10][C:9](=[O:18])[N:8]([NH:19][S:20]([CH3:23])(=[O:21])=[O:22])[C:7]2=[O:24])[CH3:2]

참가 물질

5

반응물 3

HCID 887MethanolHCID 4311764Sodium borohydrideHCID 11965693HCID 11965693, 화합물

생성물 1

HCID 11965295N-[6-(1-hydroxy-ethyl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide수율 73%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

A solution of N-(6-acetyl-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonamide (12.1 g, 33.1 mmol) in THF (150 mL)/MeOH (150 mL) under nitrogen was treated with sodium borohydride (25.0 g, 660 mmol) portionwise over 18 h at r.t. The suspension was then poured into a mixture of ice/concentrated EtOAc. The combined organic layers were dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by column chromatography (silica gel 60, DCM/MeOH 9:1) affording colorless crystals, which were recrystallized in EtOAc to provide N-[6-(1-hydroxy-ethyl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide (8.85 g, 24.1 mmol, 73%) as a white powder, m.p. 263-268° C., 1H-NMR (DMSO-d6, 400 MHz) 8.41 (s, 1H), 7.49 (s, 1H), 5.66 (m, 1 H), 5.03 (br s, 1 H), 3.18 (s, 3H), 1.36 (d, J=6.2 Hz, 3 H).

후처리

  1. additionThe suspension was then poured into a mixture of ice/concentrated EtOAc
  2. dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe crude product was purified by column chromatography (silica gel 60, DCM/MeOH 9:1)
  6. customaffording colorless crystals, which
  7. customwere recrystallized in EtOAc

출처 및 근거

ORD 기록
ord-44dd542a4638437e83d801ae443028d6
출처 데이터셋
uspto-grants-2013_08
특허 번호
US08513268B2

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