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Diisopropylethylamine → (1S,4S)-5-(2-chloro-7-(4-fluorophenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)-2-oxa-5-azabicyclo[2.2.1]heptane

HRID 451036
Notes
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Reaction equation

HRID 451036 reaction equation
[Cl:1][C:2]1[N:3]=[C:4](Cl)[C:5]2[CH2:10][CH2:9][CH:8]([C:11]3[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=3)[C:6]=2[N:7]=1.Cl.[C@H:20]12[CH2:26][C@H:23]([NH:24][CH2:25]1)[CH2:22][O:21]2.CCN(C(C)C)C(C)C>CO>[Cl:1][C:2]1[N:3]=[C:4]([N:24]2[CH2:25][C@@H:20]3[CH2:26][C@H:23]2[CH2:22][O:21]3)[C:5]2[CH2:10][CH2:9][CH:8]([C:11]3[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=3)[C:6]=2[N:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 21303398(1S,4S)-2-oxa-5-azabicyclo(2.2.1)heptane hydrochlorideHCID 580754242,4-Dichloro-7-(4-fluorophenyl)-6,7-dihydro-5H-cyclopenta[D]pyrimidine

Product 1

HCID 58075773(1S,4S)-5-(2-chloro-7-(4-fluorophenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)-2-oxa-5-azabicyclo[2.2.1]heptaneYield 60.6%

Reagents, catalysts & solvents 1

HCID 887
Methanol
Solvent

Procedure

To a solution of 2,4-dichloro-7-(4-fluorophenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidine (Preparation H) (200 mg, 0.706 mmol) in MeOH (7064 μL) was added (1S,4S)-2-Oxa-5-azabicyclo[2.2.1]heptane monohydrochloride (115 mg, 0.848 mmol) and DIPEA (271 μL, 1.554 mmol). The resulting mixture was stirred at RT overnight. The reaction mixture was then concentrated in vacuo. The resulting oil was purified by flash chromatography (Silica, EtOAc/Hexanes) to give (1S,45)-5-(2-chloro-7-(4-fluorophenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)-2-oxa-5-azabicyclo[2.2.1]heptane (148 mg, 0.428 mmol, 60.6% yield). LC-MS (M+H)+=346.1. 1H NMR (500 MHz, MeOD) δ ppm 7.12-7.21 (2H, m), 7.00-7.08 (2H, m), 5.11-5.21 (1H, m), 4.69-4.74 (1H, m), 4.15-4.26 (1H, m), 3.88-3.94 (2H, m), 3.68-3.86 (2H, m), 3.11-3.21 (1H, m), 2.56-2.69 (1H, m), 1.92-2.11 (2H, m), 1.24-1.42 (2H, m).

Workup

  1. concentrationThe reaction mixture was then concentrated in vacuo
  2. customThe resulting oil was purified by flash chromatography (Silica, EtOAc/Hexanes)

Sources & evidence

ORD record
ord-fc173e0cded747669b0d6fd5aa611ad9
Source dataset
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08486952B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes