Triethylamine → (S)(-)-2-(7-chloro-6-fluoro-1H-benzimidazol-1-yl)-N-{1-[4-(1-cyano-1-methylethyl)phenyl]ethyl}acetamide

HRID 419996Notes

Reaction equation

HRID 419996 reaction equation
[Cl:1][C:2]1[C:7]2[N:8]([CH2:11][C:12]([OH:14])=O)[CH:9]=[N:10][C:6]=2[CH:5]=[CH:4][C:3]=1[F:15].[NH2:16][C@H:17]([C:19]1[CH:24]=[CH:23][C:22]([C:25]([CH3:29])([CH3:28])[C:26]#[N:27])=[CH:21][CH:20]=1)[CH3:18].CCN(CC)CC.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CC#N.[OH-].[Na+]>[Cl:1][C:2]1[C:7]2[N:8]([CH2:11][C:12]([NH:16][C@H:17]([C:19]3[CH:24]=[CH:23][C:22]([C:25]([C:26]#[N:27])([CH3:28])[CH3:29])=[CH:21][CH:20]=3)[CH3:18])=[O:14])[CH:9]=[N:10][C:6]=2[CH:5]=[CH:4][C:3]=1[F:15]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 58298447(7-chloro-6-fluoro-1H-benzimidazol-1-yl)acetic acidHCID 58298502(S)-2-(4-(1-aminoethyl)phenyl)-2-methylpropanenitrile

Product 1

HCID 24850475(S)(-)-2-(7-chloro-6-fluoro-1H-benzimidazol-1-yl)-N-{1-[4-(1-cyano-1-methylethyl)phenyl]ethyl}acetamide

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 14798Sodium HydroxideSolvent

Procedure

A mixture of (7-chloro-6-fluoro-1H-benzimidazol-1-yl)acetic acid (1.00 g, 4.39 mmol) prepared according to scheme 12, (S)(−)-2-{4-[1-aminoethyl]phenyl}-2-methylpropanenitrile (825 mg 4.39 mmol) prepared according to scheme 20 or 21 and Et3N (1.33 g, 13.2 mmol, 1.84 mL) is stirred in MeCN (50.0 mL). HATU (1.67 g, 4.39 mmol) is added, and, after 2 hours of stirring, the mixture is diluted with 1N NaOH (100 mL) and then extracted 4 times with EtOAc (4×75.0 mL). The organic phases are combined and dried over Na2SO4. The mixture is filtered and concentrated. The product is purified by a Gilson prep pump, flow rate: 30 ml/min, column: Gemini™ (5u) 21.2×50 mm, mobile phase: A=10 mM ammonium bicarbonate, B=MeCN (1.01 g, 58%). 1H NMR (400 MHz, DMSO-D6) δ ppm 1.39 (d, J=7.03 Hz, 3H) 1.66 (s, 6H) 4.92 (quint, J=7.23 Hz, 1H) 5.19 (s, 2H) 7.23 (dd, J=10.16, 8.98 Hz, 1H) 7.37 (d, J=8.20 Hz, 2 H) 7.47 (d, J=8.59 Hz, 2H) 7.63 (dd, J=8.79, 4.49 Hz, 1H) 8.21 (s, 1H) 8.81 (d, J=7.81 Hz, 1 H) MS [M+H], calcd: 399.1. found: 399.2, [α]D=−165 (c=1.02 METHANOL) HRMS (ESI+) calcd for C21H21ClFN4O 399.13824 [M+H]+ found 399.13832.

Workup

  1. customprepared
  2. customprepared
  3. extractionextracted 4 times with EtOAc (4×75.0 mL)
  4. dry with materialdried over Na2SO4
  5. filtrationThe mixture is filtered
  6. concentrationconcentrated
  7. customThe product is purified by a Gilson prep pump, flow rate: 30 ml/min, column

Sources & evidence

ORD record
ord-2d33465104154ffba07e09752a817303
Source dataset
uspto-grants-2012_01
Patent number
US08093402B2

Reaction notes

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