Acetic Acid → (2S,5R)-1-benzyl-2,5-dimethyl-4-(3,3,3-trifluoropropyl)piperazine

HRID 1927009

반응식

HRID 1927009 반응식
[CH2:1]([N:8]1[CH2:13][C@@H:12]([CH3:14])[NH:11][CH2:10][C@@H:9]1[CH3:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[F:16][C:17]([F:22])([F:21])[CH2:18][CH:19]=O.CC(O)=O.C([BH3-])#N.[Na+]>C1COCC1.CO>[CH2:1]([N:8]1[CH2:13][C@@H:12]([CH3:14])[N:11]([CH2:19][CH2:18][C:17]([F:22])([F:21])[F:16])[CH2:10][C@@H:9]1[CH3:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

7

반응물 4

HCID 176Acetic AcidHCID 680283,3,3-TrifluoropropanalHCID 5003444Sodium cyanoborohydrideHCID 23402345(2S,5R)-1-Benzyl-2,5-dimethylpiperazine

생성물 1

HCID 57519197(2S,5R)-1-benzyl-2,5-dimethyl-4-(3,3,3-trifluoropropyl)piperazine수율 92.4%

시약·촉매·용매 2

HCID 887Methanol용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of (2S,5R)-1-benzyl-2,5-dimethylpiperazine (2.00 g, 7.21 mmol) in THF (10 mL), MeOH (10 mL), and TEA (1.0 mL) was added 3,3,3-trifluoropropionaldehyde (1.62 g, 14.4 mmol) and AcOH (0.826 mL, 14.4 mmol) followed by sodium cyanoborohydride (0.907 g, 14.4 mmol). The reaction was allowed to stir for 2 h, at which time the reaction was quenched with water (15 mL) then made basic with NaHCO3 and extracted with EtOAc. The organic layer was washed with brine, dried and concentrated in vacuo to yield a white powder (2.0 g, 90%). Mass Spectrum: Calcd for C16H24N2F3 (M+H): 301. Found: 301.

후처리

  1. customwas quenched with water (15 mL)
  2. extractionextracted with EtOAc
  3. washThe organic layer was washed with brine
  4. customdried
  5. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-09b71a23782244e28b75fcc653bd1c90
출처 데이터셋
uspto-grants-2012_05
특허 번호
US08183255B2

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