Sodium Carbonate → 5-Phenyl-3-(1-BOC-2-(S)-azetidinylmethoxy)pyridine

HRID 1780329Notes

Reaction equation

HRID 1780329 reaction equation
Br[C:2]1[CH:3]=[C:4]([O:8][CH2:9][C@@H:10]2[CH2:13][CH2:12][N:11]2[C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH:5]=[N:6][CH:7]=1.[C:21]1(B(O)O)[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.C([O-])([O-])=O.[Na+].[Na+]>C1(C)C=CC=CC=1>[C:21]1([C:2]2[CH:3]=[C:4]([O:8][CH2:9][C@@H:10]3[CH2:13][CH2:12][N:11]3[C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH:5]=[N:6][CH:7]=2)[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 10688713(S)-Tert-butyl 2-(((5-bromopyridin-3-YL)oxy)methyl)azetidine-1-carboxylate

Product 1

HCID 228726835-Phenyl-3-(1-BOC-2-(S)-azetidinylmethoxy)pyridineYield 136.1%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

The 5-bromo-3-(1-BOC-2-(S)-azetidinylmethoxy)pyridine from Example 54b (1.03 g, 3 mmol), phenylboronic acid (920 mg, 7.5 mmol), Pd(0) (100 mg) and Na2CO3 (4 mL of a 2M solution) were mixed in 20 mL of toluene, and the mixture was stirred at reflux for 3 hours. The solvent was removed under vacuum, and the residue was purified by chromatography on silica gel, eluting with chloroform:methanol 100:2, to afford 1.39 g of the title compound. MS (CI/NH3) m/z 341 (M+H)+. 1H NMR (CDCl3, 300 MHz) δ1.38 (s, 9H), 2.32 (m, 2H), 3.89 (m, 2H), 4.21 (m, 1H), 4.41 (m, 1H), 4.54 (m, 1H), 7.40 (m, 3H), 7.50 (m, 2H), 8.10 (m, 1H), 8.54 (m, 1H), 8.20 (m, 1H).

Workup

  1. temperatureat reflux for 3 hours
  2. customThe solvent was removed under vacuum
  3. customthe residue was purified by chromatography on silica gel
  4. washeluting with chloroform:methanol 100:2

Sources & evidence

ORD record
ord-0ce3f69544e9423a84b80aa91479f1b2
Source dataset
uspto-grants-1997_05
Patent number
US05629325

Reaction notes

Loading…