1,1'-Carbonyldiimidazole → HCID 66742386, compound

HRID 1618078Notes

Reaction equation

HRID 1618078 reaction equation
S(C1C=CC(C)=CC=1)(O)(=O)=O.[NH2:12][C@:13]1([C:18]([O:20][CH3:21])=[O:19])[CH2:15][C@H:14]1[CH:16]=[CH2:17].[CH:22]1[N:26]=[CH:25][N:24]([C:27](N2C=NC=C2)=[O:28])[CH:23]=1>C1COCC1>[N:24]1([C:27]([NH:12][C@:13]2([C:18]([O:20][CH3:21])=[O:19])[CH2:15][C@H:14]2[CH:16]=[CH2:17])=[O:28])[CH:23]=[CH:22][N:26]=[CH:25]1

Participants

4

Reactant 2

HCID 682631,1'-CarbonyldiimidazoleHCID 114498134-Methylbenzene-1-sulfonic acid--methyl 1-amino-2-ethenylcyclopropane-1-carboxylate (1/1)

Product 1

HCID 66742386HCID 66742386, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Compound BT was prepared according to Scheme 12. To a suspension of (1R,2S)-methyl 1-amino-2-vinylcyclopropanecarboxylate tosylate salt (25.0 g, 1 eq.) in THF (150 mL) at 50° C. were added CDI (14.24 g, 1.1 eq.) and TEA (12.27 mL, 1.1 eq.). The reaction mixture was then refluxed overnight. The solvent was removed under reduced pressure. The residue was dissolved in EtOAc, and washed with water. The organic layer was dried over sodium sulfate and concentrated. The residue was triturated in Et2O to afford compound BT (15.24 g, purity 80%) as a white solid. 1H NMR (CDCl3, 400 MHz): δ (ppm) 1.63 (dd, J=5.8 and 9.7 Hz, 1H), 1.96 (dd, J=5.8 and 8.4 Hz, 1H), 2.30 (q, J=8.9 Hz, 1H), 3.73 (s, 3H), 5.16 (d, J=10.0 Hz, 1H), 5.28 (d, J=17.0 Hz, 1H), 5.69-5.81 (m, 1H), 7.03 (s, 1H), 7.50 (s, 1H), 8.24 (s, 1H), 8.57 (s, 1H).

Workup

  1. customCompound BT was prepared
  2. temperatureThe reaction mixture was then refluxed overnight
  3. customThe solvent was removed under reduced pressure
  4. dissolutionThe residue was dissolved in EtOAc
  5. washwashed with water
  6. dry with materialThe organic layer was dried over sodium sulfate
  7. concentrationconcentrated
  8. customThe residue was triturated in Et2O
  9. customto afford compound BT (15.24 g, purity 80%) as a white solid

Sources & evidence

ORD record
ord-58ce7aa111934109b4b3ef1ba47a7d52
Source dataset
uspto-grants-2014_07
Patent number
US08765966B2

Reaction notes

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