Sodium Bicarbonate → 1,1-dimethylethyl 4-[4-bromo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-2-yl]-3,6-dihydro-1(2H)-pyridinecarboxylate

HRID 522228

Reaction equation

HRID 522228 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[N:8]([S:12]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)(=[O:14])=[O:13])[C:9](I)=[CH:10][C:3]=12.CC1(C)C(C)(C)OB([C:29]2[CH2:34][CH2:33][N:32]([C:35]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:31][CH:30]=2)O1.C(=O)(O)[O-].[Na+]>CN(C)C=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Br:1][C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[N:8]([S:12]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)(=[O:14])=[O:13])[C:9]([C:29]3[CH2:34][CH2:33][N:32]([C:35]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:31][CH:30]=3)=[CH:10][C:3]=12

Participants

6

Reactant 3

HCID 516892Sodium BicarbonateHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 469079554-Bromo-2-iodo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 690010591,1-dimethylethyl 4-[4-bromo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-2-yl]-3,6-dihydro-1(2H)-pyridinecarboxylate

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of Example 135B (260.0 mg, 0.561 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (191 mg, 0.618 mmol), Pd(Ph3P)4 (32.4 mg, 0.028 mmol), and saturated sodium bicarbonate solution (2 mL, 0.561 mmol) in N,N-dimethylformamide (8 mL) was purged with nitrogen and heated at 80° C. for 4 hours. The mixture was partitioned between ethyl acetate and brine. The organic layer was washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated and the residue was separated by flash chromatography on silica gel (Teledyne CombiFlash Rf, 40% to 100% ethyl acetate in hexane) to provide the title compound. MS (ESI+) m/z 306 (M+1).

Workup

  1. customThe mixture was partitioned between ethyl acetate and brine
  2. washThe organic layer was washed with brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated
  6. customthe residue was separated by flash chromatography on silica gel (Teledyne CombiFlash Rf, 40% to 100% ethyl acetate in hexane)

Sources & evidence

ORD record
ord-9fc930466c024cfe8fe618bb8010fcb3
Source dataset
uspto-grants-2016_05
Patent number
US09328112B2

Linked notes

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