Water → 1-t-Butyl 2-methyl (2S,4R)-4-[(7-methoxy-3-vinylquinolin-2-yl)oxy]pyrrolidine-1,2-dicarboxylate

HRID 2045713Notes

Reaction equation

Br[C:2]1[C:3]([O:14][C@H:15]2[CH2:19][N:18]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[C@H:17]([C:27]([O:29][CH3:30])=[O:28])[CH2:16]2)=[N:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[C:7]([O:12][CH3:13])[CH:6]=2.[CH:31]([B-](F)(F)F)=[CH2:32].[K+].CCOC(C)=O.O>CCO.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C(Cl)Cl>[CH3:13][O:12][C:7]1[CH:6]=[C:5]2[C:10]([CH:11]=[C:2]([CH:31]=[CH2:32])[C:3]([O:14][C@H:15]3[CH2:19][N:18]([C:20]([O:22][C:23]([CH3:24])([CH3:25])[CH3:26])=[O:21])[C@H:17]([C:27]([O:29][CH3:30])=[O:28])[CH2:16]3)=[N:4]2)=[CH:9][CH:8]=1

Participants

Conditions

Temperature: 100 °C

Procedure

TEA (0.87 mL, 6.23 mmol) was added to a solution of 1-tert-butyl 2-methyl (2S,4R)-4-[(3-bromo-7-methoxyquinolin-2-yl)oxy]pyrrolidine-1,2-dicarboxylate (2.0 g, 4.2 mmol) in EtOH (30 mL). Potassium vinyltrifluoroborate (0.84 g, 6.23 mmol) and PdCl2(dppf)-CH2Cl2 adduct (0.17 g, 0.21 mmol) were then added, and the reaction mixture was stirred at 100° C. for 2 h. The reaction mixture was worked up with EtOAc and water, and the layers were separated. The organic layer was washed with brine, dried over MgSO4, filtered and concentrated. The crude material was purified on silica (gradient elution, 0-40% EtOAc/hexanes) to yield the title compound as an oil. LRMS (M+H-tBu)+=373.3.

Workup

customthe layers were separated
washThe organic layer was washed with brine
dry with materialdried over MgSO4
filtrationfiltered
concentrationconcentrated
customThe crude material was purified on silica (gradient elution, 0-40% EtOAc/hexanes)

Sources & evidence

ORD record: ord-fc50a3d52795431b98f54105731d4a5b
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08591878B2

Reaction notes

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