4-(Aminomethyl)benzonitrile → tert-butyl (2S,3R)-4-(4-cyanobenzylamino)-1-cyclohexyl-3-hydroxybutan-2-ylcarbamate

HRID 253565

Reaction equation

HRID 253565 reaction equation
[CH:1]1([CH2:7][C@H:8]([NH:12][C:13](=[O:19])[O:14][C:15]([CH3:18])([CH3:17])[CH3:16])[C@H:9]2[CH2:11][O:10]2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[C:20]([C:22]1[CH:29]=[CH:28][C:25]([CH2:26][NH2:27])=[CH:24][CH:23]=1)#[N:21]>CC#N>[C:20]([C:22]1[CH:29]=[CH:28][C:25]([CH2:26][NH:27][CH2:11][C@@H:9]([OH:10])[C@@H:8]([NH:12][C:13](=[O:19])[O:14][C:15]([CH3:18])([CH3:17])[CH3:16])[CH2:7][CH:1]2[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]2)=[CH:24][CH:23]=1)#[N:21]

Participants

4

Reactant 2

HCID 826084-(Aminomethyl)benzonitrileHCID 9816868erythro-N-Boc-L-cyclohexylalanine epoxide

Product 1

HCID 57786472tert-butyl (2S,3R)-4-(4-cyanobenzylamino)-1-cyclohexyl-3-hydroxybutan-2-ylcarbamateYield 58%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a solution of tert-butyl (S)-2-cyclohexyl-1-((S)-oxiran-2-yl)ethylcarbamate (67.3 mg, 0.25 mmol) in CH3CN (8 mL) was added 4-cyanobenzylamine (39.6 mg, 0.3 mmol) and the mixture was heated under reflux overnight. The solvent was removed in vacuo and the residue was purified by the preparative HPLC to give tert-butyl (2S,3R)-4-(4-cyanobenzylamino)-1-cyclohexyl-3-hydroxybutan-2-ylcarbamate (58 mg, 58%). 1H NMR: 0.82 (m, 1H), 0.95 (m, 1H), 1.10-1.48 (m, 5H), 1.45 (s, 9H), 1.55-1.68 (m, 5H), 1.76 (m, 1H), 2.65 (m, 2H), 3.46 (m, 1H), 3.85 (m, 2H), 4.49 (m, 1H), 7.42 (d, 2H), 7.59 (d, 2H). MS (E/Z): 402 (M+H+).

Workup

  1. temperaturethe mixture was heated
  2. temperatureunder reflux overnight
  3. customThe solvent was removed in vacuo
  4. customthe residue was purified by the preparative HPLC

Sources & evidence

ORD record
ord-7aacd091071646e98274e8610343ad47
Source dataset
uspto-grants-2011_01
Patent number
US07872028B2

Linked notes

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