2-Bromoethyldimethylamine → HCID 67036842, 화합물

HRID 216072노트

반응식

HRID 216072 반응식
[N:1]1([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:6][CH2:5][CH:4]([C:7]([O:9][CH2:10][CH3:11])=[O:8])[CH2:3][CH2:2]1.[Li+].CC([N-]C(C)C)C.Br[CH2:28][CH2:29][N:30]([CH3:32])[CH3:31]>C1COCC1>[CH3:31][N:30]([CH3:32])[CH2:29][CH2:28][C:4]1([C:7]([O:9][CH2:10][CH3:11])=[O:8])[CH2:3][CH2:2][N:1]([C:12]([O:14][C:15]([CH3:17])([CH3:16])[CH3:18])=[O:13])[CH2:6][CH2:5]1

참가 물질

5

반응물 3

HCID 178642-BromoethyldimethylamineHCID 2724682Lithium diisopropylamideHCID 27588121-Tert-butyl 4-ethyl piperidine-1,4-dicarboxylate

생성물 1

HCID 67036842HCID 67036842, 화합물수율 50%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

To a solution of 1-tert-butyl 4-ethyl piperidine-1,4-dicarboxylate (514 mg, 2 mmol) in THF (10 mL) at −78° C. was added dropwise LDA (1.5 M in cyclohexane, 2 mL, 3 mmol). After stirring for 30 minutes, 2-bromo-N,N-dimethylethanamine (370 mg, 2.4 mmol) in THF (3 mL) was added. The reaction was stirred for 30 min at −78° C., then allowed to warm to room temperature, stirred for 2 hours, then quenched with sat. aq. NaHCO3, diluted with EtOAc, washed with sat. aq. NaHCO3 and brine (with back extraction), dried over MgSO4, and concentrated under vacuum. The residue was purified by flash chromatography (40 g SiO2, 0-15% MeOH:CH2Cl2) to give the title compound (328 mg, 1.0 mmol, 50%) as a yellow oil. MS (ES+) [M+H]+=329.

후처리

  1. stirringThe reaction was stirred for 30 min at −78° C.
  2. stirringstirred for 2 hours
  3. customquenched with sat. aq. NaHCO3
  4. additiondiluted with EtOAc
  5. washwashed with sat. aq. NaHCO3 and brine (with back extraction)
  6. dry with materialdried over MgSO4
  7. concentrationconcentrated under vacuum
  8. customThe residue was purified by flash chromatography (40 g SiO2, 0-15% MeOH:CH2Cl2)

출처 및 근거

ORD 기록
ord-a6aed3f2900b471d8fa8076e5baf4f9d
출처 데이터셋
uspto-grants-2012_06
특허 번호
US08193202B2

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