4-Fluorobenzyl chloride → HCID 9797495, 화합물

HRID 2270934노트

반응식

HRID 2270934 반응식
O1C2C=CC(N3CCNCC3)=CC=2OCC1.C(O)(=O)C(O)=O.[O:23]1[C:28]2[CH:29]=[CH:30][C:31]([N:33]3[CH2:38][CH2:37][N:36]([CH2:39][C:40]4[CH:45]=[CH:44][C:43]([F:46])=[CH:42][CH:41]=4)[CH2:35][CH2:34]3)=[CH:32][C:27]=2[O:26][CH2:25][CH2:24]1.C(=O)([O-])[O-].[K+].[K+].FC1C=CC(CCl)=CC=1>CC#N>[O:23]1[C:28]2[CH:29]=[CH:30][C:31]([N:33]3[CH2:34][CH2:35][N:36]([CH2:39][C:40]4[CH:45]=[CH:44][C:43]([F:46])=[CH:42][CH:41]=4)[CH2:37][CH2:38]3)=[CH:32][C:27]=2[O:26][CH2:25][CH2:24]1

참가 물질

6

반응물 4

HCID 96024-Fluorobenzyl chlorideHCID 11430Potassium CarbonateHCID 10713381-(2,3-Dihydro-benzo[1,4]dioxin-6-yl)-piperazineHCID 18399633HCID 18399633, 화합물

생성물 1

HCID 9797495HCID 9797495, 화합물수율 34%

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

A solution of 1-(1,4-benzodioxan-6-yl)piperazine prepared as described in Example 1 (0.146 g, 0.663 mmol) in CH3CN (5 mL) is treated with potassium carbonate (0.458 g, 3.32 mmol) and 4-fluorobenzyl chloride (0.144 g, 0.995 mmol). The mixture is heated at ref lux for 4 hours. The resulting mixture is then cooled to room temperature and washed successively with saturated aqueous NH4Cl (20 mL) and saturated aqueous NaCl (20 mL). The organic portion is dried over Mg2SO4, filtered and concentrated. Purification by flash column chromatography (30% ethyl acetate-hexane) gives 0.074 g (34%) of 1-(1,4 benzodioxan-6-yl)-4-(4-fluorobenzyl)piperazine as a white solid (TLC Rf 0.35; 30% ethyl acetate:hexane). A solution of this material in 1 mL of ethanol is treated with oxalic acid (0.020 g, 0.225 mmol) and concentrated to give 1-(1-(1,4-benzodioxan-6-yl)-4-(4-fluorobenzyl)piperazine oxalic acid salt (Compound 1) 0.079 g (88%), m.p. 177-179° C.

후처리

  1. temperatureThe mixture is heated at ref lux for 4 hours
  2. washwashed successively with saturated aqueous NH4Cl (20 mL) and saturated aqueous NaCl (20 mL)
  3. dry with materialThe organic portion is dried over Mg2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customPurification by flash column chromatography (30% ethyl acetate-hexane)

출처 및 근거

ORD 기록
ord-c26665ce57854980bc55b559c773612c
출처 데이터셋
uspto-grants-2001_12
특허 번호
US06333329B2

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