Ethyl bromoacetate → HCID 90417137, 화합물

HRID 1748398노트

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HRID 1748398 반응식
[Cl:1][C:2]1[CH:3]=[C:4]([CH:25]=[CH:26][CH:27]=1)[CH2:5][O:6][C:7]1[CH:16]=[C:15]2[C:10]([CH2:11][CH2:12][C:13](=[O:24])[N:14]2[C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])=[CH:9][CH:8]=1.C[Si]([N-][Si](C)(C)C)(C)C.[Li+].Br[CH2:39][C:40]([O:42][CH2:43][CH3:44])=[O:41]>C1COCC1>[Cl:1][C:2]1[CH:3]=[C:4]([CH:25]=[CH:26][CH:27]=1)[CH2:5][O:6][C:7]1[CH:16]=[C:15]2[C:10]([CH2:11][CH:12]([CH2:39][C:40]([O:42][CH2:43][CH3:44])=[O:41])[C:13](=[O:24])[N:14]2[C:17]([O:19][C:20]([CH3:23])([CH3:21])[CH3:22])=[O:18])=[CH:9][CH:8]=1

참가 물질

5

반응물 3

HCID 7748Ethyl bromoacetateHCID 2733832Lithium HexamethyldisilazideHCID 90417479HCID 90417479, 화합물

생성물 1

HCID 90417137HCID 90417137, 화합물

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of tert-butyl 7-((3-chlorobenzyl)oxy)-2-oxo-3,4-dihydroquinoline-1(2H)-carboxylate (34 g, 0.09 mol) in THF (50.09 mL) was added a solution of lithium bis(trimethylsilyl)amide (1.06 M in THF, 99.24 mL, 0.11 mol) at −78° C. The reaction was stirred at that temperature for 30 minutes after which ethyl bromoacetate (9.70 mL, 0.09 mol) was added. The reaction was allowed to warm to ambient temperature, stirred overnight and quenched into water (250 mL). The aqueous layer was extracted with EtOAc (2×50 mL) and the combined organic layers were washed with brine and dried over MgSO4. The organics were concentrated under reduced pressure to afford a yellow-brown oil and carried on crude to the next step. 1H NMR (400 MHz, CDCl3) δ 7.35 (s, 1H), 7.27-7.22 (m, 3H), 7.02 (d, J=8.4 Hz, 1H), 6.59 (dd, J=8.3, 2.5 Hz, 1H), 6.49 (d, J=2.4 Hz, 1H), 4.95 (s, 2H), 4.12 (q, J=7.2 Hz, 2H), 3.06-2.91 (m, 1H), 2.87-2.70 (m, 2H), 2.60 (d, J=7.5 Hz, 1H), 2.37 (d, J=8.9 Hz, 1H), 1.54-1.44 (m, 9H), 1.26-1.19 (m, 3H). [M+H]=374.2.

후처리

  1. additionwas added
  2. customquenched into water (250 mL)
  3. extractionThe aqueous layer was extracted with EtOAc (2×50 mL)
  4. washthe combined organic layers were washed with brine
  5. dry with materialdried over MgSO4
  6. concentrationThe organics were concentrated under reduced pressure
  7. customto afford a yellow-brown oil

출처 및 근거

ORD 기록
ord-1da557ebda844af49671f7478efe817a
출처 데이터셋
uspto-grants-2015_10
특허 번호
US09150572B2

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