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1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → t-Butyl 4-(4-(5-(3-(4-cyanophenyl)azetidine-1-carbonyl)-2-methylphenyl)-5-methyl-1H-imidazol-2-yl)piperidine-1-carboxylate

HRID 1488047
Notes
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Reaction equation

HRID 1488047 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[NH:15][C:16]([C:20]3[CH:21]=[C:22]([CH:26]=[CH:27][C:28]=3[CH3:29])[C:23](O)=[O:24])=[C:17]([CH3:19])[N:18]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.[NH:31]1[CH2:34][CH:33]([C:35]2[CH:42]=[CH:41][C:38]([C:39]#[N:40])=[CH:37][CH:36]=2)[CH2:32]1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>CN(C=O)C>[C:39]([C:38]1[CH:37]=[CH:36][C:35]([CH:33]2[CH2:32][N:31]([C:23]([C:22]3[CH:26]=[CH:27][C:28]([CH3:29])=[C:20]([C:16]4[N:15]=[C:14]([CH:11]5[CH2:10][CH2:9][N:8]([C:6]([O:5][C:1]([CH3:3])([CH3:2])[CH3:4])=[O:7])[CH2:13][CH2:12]5)[NH:18][C:17]=4[CH3:19])[CH:21]=3)=[O:24])[CH2:34]2)=[CH:42][CH:41]=1)#[N:40]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 552549914-(Azetidin-3-yl)benzonitrile hydrochloride2×HCID 178425881HCID 178425881, compound2×

Product 1

HCID 90021783
t-Butyl 4-(4-(5-(3-(4-cyanophenyl)azetidine-1-carbonyl)-2-methylphenyl)-5-methyl-1H-imidazol-2-yl)piperidine-1-carboxylate
Yield 69.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 3-(2-(1-(tert-butoxycarbonyl)piperidin-4-yl)-4-methyl-1H-imidazol-5-yl)-4-methylbenzoic acid (compound 182.2, 506 mg), 4-(azetidin-3-yl)benzonitrile hydrochloride (compound 5.2, 296 mg, 1.52 mmol), EDCI (315 mg, 1.65 mmol), HOBt (107 mg, 0.64 mmol) and DIEA (877 μL, 5.08 mmol) in DMF (25 mL) was stirred at room temperature for 16 hours. The reaction was concentrated under reduced pressure, diluted with saturated NaHCO3 (20 mL) and extracted with EtOAc (50 mL). The organic phase was washed with brine (3×10 mL), dried over MgSO4 and concentrated under reduced pressure. The residue was purified by preparative TLC with 8% methanol in dichloromethane to give 476 mg (69%) of the title compound as a foam. m/z (ES+) 540 (M+H)+.

Workup

  1. concentrationThe reaction was concentrated under reduced pressure
  2. additiondiluted with saturated NaHCO3 (20 mL)
  3. extractionextracted with EtOAc (50 mL)
  4. washThe organic phase was washed with brine (3×10 mL)
  5. dry with materialdried over MgSO4
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by preparative TLC with 8% methanol in dichloromethane

Sources & evidence

ORD record
ord-416448e5981144ee82a0390a09c7372b
Source dataset
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09428502B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes