反应详情

To a solution of 1-tert-butyl 2-ethyl 2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-1,2-dicarboxylate (prepared using methods of M Boehringer, et al. U.S. Pat. No. 7,417,144) (200 mg, 684 μmol, Eq: 1.00) in THF (1.2 mL) and MeOH (0.8 mL) was added LiOH (16.4 mg, 684 μmol, Eq: 1.00) in one portion. The reaction mixture was stirred at rt for 72 h. The reaction mixture was concentrated in vacuo and the residue treated with DCM (10 mL) to give lithium 1-(tert-butoxycarbonyl)-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-2-carboxylate as an off-white solid (200 mg) which was used without further purification.

1. concentrationThe reaction mixture was concentrated in vacuo
2. additionthe residue treated with DCM (10 mL)