Trifluoroacetic acid → Ethyl 2-((cyclopentylamino)methyl)-2-fluorobutanoate

HRID 1880935노트

반응식

HRID 1880935 반응식
C([N:8]([CH2:14][C:15]([F:23])([CH2:21][CH3:22])[C:16]([O:18][CH2:19][CH3:20])=[O:17])[CH:9]1[CH2:13][CH2:12][CH2:11][CH2:10]1)C1C=CC=CC=1.C(O)(C(F)(F)F)=O>C(O)C.[OH-].[OH-].[Pd+2]>[CH:9]1([NH:8][CH2:14][C:15]([F:23])([CH2:21][CH3:22])[C:16]([O:18][CH2:19][CH3:20])=[O:17])[CH2:10][CH2:11][CH2:12][CH2:13]1

참가 물질

5

반응물 2

HCID 6422Trifluoroacetic acidHCID 57955532Ethyl 2-((benzyl(cyclopentyl)amino)methyl)-2-fluorobutanoate

생성물 1

HCID 57955590Ethyl 2-((cyclopentylamino)methyl)-2-fluorobutanoate수율 88%

시약·촉매·용매 2

HCID 9942167Palladium hydroxide촉매HCID 702Ethanol용매

실험 절차

A solution of ethyl 2-((benzyl(cyclopentyl)amino)methyl)-2-fluorobutanoate (2.2 g, 6.8 mmol) in ethanol (20 mL) was hydrogenated with Pd(OH)2 (20%, 240 mg, 0.34 mmol) in presence of TFA (6.8 mmol) at atmospheric pressure for 20 h. The reaction mixture was filtered through celite. The filtrate was concentrated and diluted to EtOAc/H2O, aqueous layer was basified to pH=11-12 by 1N NaOH. The organic layer was then dried and concentrated to give the product (1.38 g, 88%) as light yellow liquid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 0.95 (t, J=7.6 Hz, 3 H) 1.31 (t, J=7.1 Hz, 4 H) 1.41-1.94 (m, 9 H) 2.88-3.08 (m, 3 H) 4.26 (qd, J=7.12, 2.40 Hz, 2 H). [M+H] calc'd for C12H22FNO2, 232; found 232.

후처리

  1. filtrationThe reaction mixture was filtered through celite
  2. concentrationThe filtrate was concentrated
  3. additiondiluted to EtOAc/H2O, aqueous layer
  4. customThe organic layer was then dried
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-e4f6e835d6b2431a8253c7b65b283e45
출처 데이터셋
uspto-grants-2012_11
특허 번호
US08318727B2

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