Réaction #159092

Équation de réaction

2-Aza-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid 2-tert-butyl ester

triethylamine

Pyrrolidine-1,2-dicarboxylic acid 2-{2-[7-(2-bromo-acetyl)-dibenzofuran-3-yl]-2-oxo-ethyl}ester 1-tert-butyl ester

→

2-Aza-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid 3-(2-{7-[2-(1-tert-butoxycarbonyl-pyrrolidine-2-carbonyloxy)-acetyl]-dibenzofuran-3-yl}-2-oxo-ethyl) ester 2-tert-butyl ester

Rendement 93.2%

Solvants

acetonitrile

DMF

Conditions de réaction

Traitement

1. 1
   Autrethe solvent was evaporated
2. 2
   workup.ADDITIONThe mixture was diluted with EtOAc
3. 3
   Lavagewashed with water and brine
4. 4
   Séchagewas dried with sodium sulfate
5. 5
   ConcentrationConcentration

Mode opératoire

To the solution of 2-Aza-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid 2-tert-butyl ester (155 mg, 0.64 mmol) and triethylamine (77 μl, 0.55 mmol) in acetonitrile (3 ml) was added a solution of Pyrrolidine-1,2-dicarboxylic acid 2-{2-[7-(2-bromo-acetyl)-dibenzofuran-3-yl]-2-oxo-ethyl}ester 1-tert-butyl ester (200 mg, 0.37 mmol) in DMF (6 ml). The mixture was stirred for 10 hours, and the solvent was evaporated. The mixture was diluted with EtOAc, and washed with water and brine, and was dried with sodium sulfate. Concentration gave 2-Aza-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid 3-(2-{7-[2-(1-tert-butoxycarbonyl-pyrrolidine-2-carbonyloxy)-acetyl]-dibenzofuran-3-yl}-2-oxo-ethyl) ester 2-tert-butyl ester (243 mg). m/z: 703.3 (M−1), 727.2 (M+Na)

Source