Ethyl orthoformate → 3-[(S)-(4-chlorophenyl)(3-{(1S)-2-fluoro-1-[3-fluoro-5-(1,3,4-oxadiazol-2-yl)phenyl]-2-methylpropyl}azetidin-1-yl)methyl]benzonitrile

HRID 602997Notes

Reaction equation

HRID 602997 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]([C:29]2[CH:34]=[CH:33][CH:32]=[C:31]([C:35]#[N:36])[CH:30]=2)[N:9]2[CH2:12][CH:11]([C@@H:13]([C:18]3[CH:19]=[C:20]([CH:25]=[C:26]([F:28])[CH:27]=3)[C:21]([NH:23][NH2:24])=[O:22])[C:14]([F:17])([CH3:16])[CH3:15])[CH2:10]2)=[CH:4][CH:3]=1.[CH:37](OCC)(OCC)OCC>C1(C)C(C)=CC=CC=1>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C@H:8]([N:9]2[CH2:12][CH:11]([C@@H:13]([C:18]3[CH:19]=[C:20]([C:21]4[O:22][CH:37]=[N:24][N:23]=4)[CH:25]=[C:26]([F:28])[CH:27]=3)[C:14]([F:17])([CH3:16])[CH3:15])[CH2:10]2)[C:29]2[CH:30]=[C:31]([CH:32]=[CH:33][CH:34]=2)[C:35]#[N:36])=[CH:6][CH:7]=1

Participants

4

Reactant 2

HCID 31214Ethyl orthoformateHCID 670553323-((1S)-1-{1-[(S)-(4-chlorophenyl)(3-cyanophenyl)methyl]azetidin-3-yl}-2-fluoro-2-methylpropyl)-5-fluorobenzohydrazide

Product 1

HCID 667056523-[(S)-(4-chlorophenyl)(3-{(1S)-2-fluoro-1-[3-fluoro-5-(1,3,4-oxadiazol-2-yl)phenyl]-2-methylpropyl}azetidin-1-yl)methyl]benzonitrile

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Procedure

A solution of 41 mg (0.081 mmol) of 3-((1S)-1-{1-[(S)-(4-chlorophenyl)(3-cyanophenyl)methyl]azetidin-3-yl}-2-fluoro-2-methylpropyl)-5-fluorobenzohydrazide and 1.5 mL triethyl orthoformate in 2 mL of xylene was stirred for 3.5 at 125° C., followed by concentration to remove solvents. The residue was purified by silica gel chromatography with hexane/ethyl acetate/ammonia in MeOH to afford the title compound as a white solid; 1H-NMR(CDCl3) δ 1.23(d, 3H, J=22 Hz), 1.29(d, 3H, J=22 Hz), 2.34 (t, 1H, J=8 Hz), 2.89 (t, 1H, J=8 Hz), 2.98 (m, 1H), 3.02 (t, 1H, J=11 Hz), 3.25 (m, 1H), 3.63 (t, 1H, J =6 Hz), 4.23 (s, 1H), 7.11-7.73 (m, 11H), 8.51(s, 1H); Mass Spectrum: m/e=519 (M+1, 35Cl), 521 (M+1, 37Cl).

Workup

  1. concentrationfollowed by concentration
  2. customto remove solvents
  3. customThe residue was purified by silica gel chromatography with hexane/ethyl acetate/ammonia in MeOH

Sources & evidence

ORD record
ord-c0b9461765ba49d78d72b36eabc61f1d
Source dataset
uspto-grants-2011_03
Patent number
US07906652B2

Reaction notes

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